Tropical Medicine and Health最新文献

{"title":"Do they really boil their drinking water? a descriptive study in a rural district of the Lao people's democratic republic.","authors":"Sae Kawamoto, Daisuke Nonaka, Nouhak Inthavong","doi":"10.1186/s41182-024-00626-z","DOIUrl":"https://doi.org/10.1186/s41182-024-00626-z","url":null,"abstract":"<p><strong>Background: </strong>For safe drinking water, household water treatments (HWT) is important to reduce the risk of diarrhea in low-and-middle countries including Lao People's Democratic Republic (Lao PDR). However, the measurement of HWT relies chiefly on self-report in most nationwide surveys. Thus, the validity of self-reported measurement is of concern. The objective of this study was to determine the proportion of households with the presence of boiled water among households that report boiling practices in a rural area of the Lao PDR.</p><p><strong>Methods: </strong>This study was conducted with randomly selected 108 households in the four villages in the catchment area of the two health centers, in Xepon district of the Savannakhet province, between September and October 2023. The inclusion criterion of the households was the households that report boiling as HWT. Surveyors conducted interviews with an adult household member and observations on boiled water through household visits, using a questionnaire. Descriptive statistics were conducted to summarize the collected information using the frequency with proportion for categorical variables and the median with interquartile range for continuous variables. Bivariate analyses were conducted to assess an association between each of the factors and the presence of boiled water, using Fisher's exact test.</p><p><strong>Results: </strong>Among the 108 households that reported boiling practice, 91 households were able to show the surveyor self-reported boiled water. Thus, the proportion of households with the presence of boiled water was 90.1% (95% confidence interval: 82.5-95.1%). Households with a fixed schedule of boiling were significantly more likely to present boiled water, compared to households without (94.5% vs. 50.0%). Not all household members do not necessarily drink boiled water: approximately a quarter (25.7%) of the participants reported that some household members drink unboiled water.</p><p><strong>Conclusions: </strong>This study showed that among households that reported boiling drinking water, 90.1% were able to present a container with self-reported boiled water. It suggests that the self-reported measure of boiling practices can be valid in the study villages.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"60"},"PeriodicalIF":3.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11409578/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ethnobotanical survey of medicinal and ritual plants utilized by the indigenous communities of Benguet province, Philippines.","authors":"Janna R Andalan, Alissa Jane S Mondejar, Nanette Hope N Sumaya, Jaime Q Guihawan, Ma Reina Suzette B Madamba, Carlito Baltazar Tabelin, David Guilingen, Florifern C Paglinawan, Kryzzyl M Maulas, Isidro Arquisal, Arnel B Beltran, Aileen H Orbecido, Michael Angelo Promentilla, Dennis Alonzo, Pamela Flynn Pisda, Alleah Ananayo, Marlon Suelto, Irish Mae Dalona, Vannie Joy Resabal, Robin Armstrong, Anne D Jungblut, Ana Santos, Pablo Brito-Parada, Yves Plancherel, Richard Herrington, Mylah Villacorte-Tabelin","doi":"10.1186/s41182-024-00624-1","DOIUrl":"https://doi.org/10.1186/s41182-024-00624-1","url":null,"abstract":"<p><strong>Background: </strong>The Sto. Niño site in Benguet province, Philippines was once a mining area that has now been transformed into an agricultural land. In this area, there has been significant integration of the three indigenous people (IPs) Ibaloi, Kankanaeys and Kalanguyas with the Ilocano community. These IPs safeguard biodiversity and traditional knowledge, including medicinal plant use. However, the documentation of these plant species and their medicinal applications has not been systematic, with the resultant loss of knowledge across generations. This study aims to document the medicinal and ritual plants used by the indigenous communities at the site, in order to preserve and disseminate traditional medicinal knowledge that would otherwise be lost.</p><p><strong>Methods: </strong>Ethnobotanical data were collected in Sto. Niño, Brgy. Ambassador, Municipality of Tublay, Benguet, Philippines, and collected through semi-structured interviews, together with focus group discussions (FGD). A total of 100 residents (39 male and 61 female) were interviewed. Among them, 12 were key interviewees, including community elders and farmers, while the rest were selected through the convenience and snowball technique. Demographic information collected from the interviewees included age, gender, and occupation. Ethnobotanical information collected focused on medicinal plants, including the specific parts of plants used, methods of preparation, modes of treatment, and the types of ailments treated. Ethnobotanical quantitative indices of the relative frequency of citations (RFC) and informant consensus factor (ICF) were calculated to evaluate the plant species that were utilized by the community.</p><p><strong>Results: </strong>A total of 28 medicinal plants from 20 different families and 6 ritual plants from 5 different families were documented. Asteraceae, Poaceae, and Lamiaceae (10.71%) family are the most mentioned medicinal plant species, followed by Myrtaceae and Euphorbiaceae (7.14%). The most widely used growth form were herbs (46.4%), while leaves (61.5%) were the most utilized plant part, and the preparation of a decoction (62.2%) was the most preferred method of processing and application. The medicinal plants were most commonly utilized for wound-healing, cough and colds, stomachache and kidney trouble, whereas ritual plants were largely used for healing, protection, and funeral ceremonies.</p><p><strong>Conclusion: </strong>This study marks the first report on the medicinal and ritual plants used by a group of indigenous communities in Sto. Niño, Brgy. Ambassador, Tublay, Benguet Province. The data collected show that plant species belonging to the Asteraceae, Poaceae, and Lamiaceae family were the most mentioned and should be further evaluated by pharmacological analysis to assess their wider use for medicinal treatment.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"59"},"PeriodicalIF":3.6,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11385124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mental health problems in Somalia after decades of humanitarian crises: a qualitative exploration of perceptions and experiences.","authors":"Md Manirul Islam, Abdiwali Ahmed Siyad, Sk Md Mamunur Rahman Malik","doi":"10.1186/s41182-024-00618-z","DOIUrl":"10.1186/s41182-024-00618-z","url":null,"abstract":"<p><strong>Background: </strong>Humanitarian crises increase the risk of mental health problems. Somalia has been affected by conflict, insecurity, and economic turmoil for over three decades, as well as climatic shocks. However, 80-90% of Somalis who have mental health problems do not have access to good-quality, and affordable mental health care. To develop an evidence-based, effective, equitable, and humane programme for mental health, we need to have a holistic understanding of mental health problems and care in relation to people's perceptions, experiences, and behaviour related to mental health.</p><p><strong>Methods: </strong>We undertook a qualitative study to explore Somalis' perceptions and experiences of mental health problems. We conducted three key informant interviews, two in-depth interviews, nine focus group discussions, 12 observations in private and public health facilities and more than 12 informal discussions. We used case vignettes translated into Somali during our discussion. We also studied three cases with experience of mental health problems to understand care-seeking behaviour and the experiences with services available.</p><p><strong>Results: </strong>Somalia has been moving from a traditional pastoral nomadic lifestyle to a settled one. A strong informal support system exists in the community within clans or family relations. Armed conflict often among clans, natural disasters, and khat use are the three main factors affecting mental health. The prevalence of mental problems is likely greater than is evident. It is perceived that about 95% of people suffering from mental illness remain outside of appropriate care. Few people seek care for mental health problems because they are not aware of it and because it is highly stigmatized and neglected. Those who do seek care usually go to traditional healers because of culture and cost. Resources for mental health care are grossly inadequate with a limited and often poorly trained workforce. At least two levels of barrier to mental health care exist, at the individual/family level (e.g. poor awareness of mental health and stigma) and service provider level (e.g. lack of staff and limited ability to diagnose, treat, or refer persons with mental health problems and stigma). No tool or evidence-based programme is available to address these barriers.</p><p><strong>Conclusion: </strong>A qualitative data-driven mental health programme that addresses all these issues is needed with more trained mental health professionals. Given the stigma about mental health problems, there is also a need for a tool to raise awareness about mental health and the importance of mental health care among both the public and health workers.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"58"},"PeriodicalIF":3.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11382377/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A serological survey of COVID-19 among predominantly aboriginal residents of a tourist island in southern Thailand.","authors":"Supakorn Sripaew, Kameelah Yasharad, Dzerlina S Rahari, Weiyan Feng, Zhenzhu Qian, Huynh Ngoc Thanh, Pei Li, Agus Fitriangga, Satiti Palupi Purwanto, Aye Nyein Phyu, Fangming Xianyu, Sombat Phadungvitvatthana, Wit Wichaidit, Ponlagrit Kumwichar, Virasakdi Chongsuvivatwong","doi":"10.1186/s41182-024-00617-0","DOIUrl":"10.1186/s41182-024-00617-0","url":null,"abstract":"<p><strong>Background: </strong>The current survey describes the seroprevalence, history of coronavirus disease 2019 (COVID-19), and vaccination status among predominantly aboriginal residents on a tourist island in southern Thailand. This information can be translated into COVID-19 vaccination and control plans for this population.</p><p><strong>Methods: </strong>We implemented questionnaire interviews and collected blood samples from 249 residents of Lipe Island, Satun Province, in January 2022. We measured the anti-nucleocapsid protein and anti-spike (anti-S) receptor-binding protein levels of immunoglobulin (Ig) M and IgG. The differences in antibody levels among participants with different histories of vaccination and infection were analyzed using one-way analysis of variance with multiple comparisons.</p><p><strong>Results: </strong>During the 2-year pandemic period, no island residents with COVID-19 required hospitalization despite the high prevalence of hypertension (33.3%) and diabetes mellitus (21.7%). Approximately 18.8% of the participants reported a history of COVID-19 diagnosis. In total, 95.1% of the participants had a history of complete vaccination, of which 93.5% were seropositive. The anti-S IgG geometric means (geometric standard deviation) were 3945.8 (2.0), 829.8 (9.7) AU/mL, 789.9 (5.3) AU/mL, and 22.7 (7.1) AU/mL, respectively, in participants with a history of both COVID-19 diagnosis and complete vaccination (group 1), incomplete vaccination and subsequent COVID-19 diagnosis (group 2), complete vaccination but no previous infection (group 3), or neither previous COVID-19 and complete vaccination (group 4). Significant pairwise differences in anti-S IgG levels were found between certain groups (1 vs 3, 1 vs 4, 2 vs 4, and 3 vs 4).</p><p><strong>Conclusions: </strong>The high coverage of vaccination, high levels of population antibody titers, variable antibody levels among completely vaccinated non-infected residents, and high prevalence of non-communicable diseases (NCDs) suggested that the local health systems could control the pandemic. However, continuing surveillance, booster vaccinations, and NCD prevention programs were still required.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"57"},"PeriodicalIF":3.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11373474/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of integrated WASH and maternal and child health interventions on diarrhea disease prevalence in a resource-constrained setting in Kenya.","authors":"Betty Muriithi, Ernest Apondi Wandera, Rie Takeuchi, Felix Mutunga, Cyrus Kathiiko, Mary Wachira, Joseph Tinkoi, Mirasine Meiguran, Pius Akumu, Valeria Ndege, Ryoichiro Mochizuki, Satoshi Kaneko, Kouichi Morita, Collins Ouma, Yoshio Ichinose","doi":"10.1186/s41182-024-00616-1","DOIUrl":"10.1186/s41182-024-00616-1","url":null,"abstract":"<p><strong>Background: </strong>Water, sanitation and hygiene (WASH) and child health interventions are proven simple and cost-effective strategies for preventing diarrhea and minimizing excess mortality. Individually, they are able to prevent diarrhea though sub-optimally, and their effectiveness when combined may be higher. This study examined the effect of integrated WASH and maternal and child health (MCH) interventions on prevalence of diarrhea, in a resource-limited setting in Kenya.</p><p><strong>Methods: </strong>A controlled intervention was implemented in Narok County. The interventions included WASH interventions integrated with promotion of MCH. A structured questionnaire was used to collect data on targeted indicators before and after the interventions. Data were analyzed using descriptive statistics and Chi-square to establish the impact of the interventions.</p><p><strong>Results: </strong>A total of 431and 424 households and 491 and 487 households in intervention and control sites, respectively, participated in the baseline and endline surveys. Following implementation of the interventions, prevalence of diarrhea decreased by 69.1% (95% CI: 49.6-87.1%) and 58.6% (95% CI: 26.6-82.4%) in the intervention and control site, respectively. Treatment of drinking water and animal husbandry practices were significantly associated with diarrhea post-interventions.</p><p><strong>Conclusions: </strong>Integrating WASH interventions with other diarrhea control strategies and contextualizing them to meet site-specific needs may effectively prevent diarrhea.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"56"},"PeriodicalIF":3.6,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11363663/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Actinomyces funkei bacteraemia and infected pulmonary cavities in an intravenous drug user: a case report.","authors":"Tanaraj Perinpanathan, Katherine Beckett, Chris Smith","doi":"10.1186/s41182-024-00610-7","DOIUrl":"10.1186/s41182-024-00610-7","url":null,"abstract":"<p><strong>Background: </strong>Actinomyces spp. are most commonly found in human commensal flora; however, they have also been shown to cause suppurative infections. We present a case of a rare Actinomyces funkei bacteraemia from an infected deep vein thrombosis in a patient who went on to develop pulmonary cavities secondary to septic emboli. Infected thrombi and septic emboli have been associated with other Actinomyces spp. in the literature, often posing a diagnostic challenge and, in some cases, causing drastic clinical deterioration in patients. The literature regarding Actinomyces funkei is scarce and to our knowledge there are no reports of a relationship between this Actinomyces subspecies and infected thrombi or septic emboli.</p><p><strong>Case presentation: </strong>The patient was a 39-year-old known intravenous drug user who presented with a groin injecting site sinus and systemic symptoms. The bacteria was first observed by gram staining of a blood culture sample after 48 h of incubation and the species was identified using matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) as Actinomyces funkei. Sputum cytology/histology with cell block revealed a branching gram-positive species suspicious of slow growing bacteria or fungus. CT imaging of his lower limb and chest revealed an extensive DVT with inflammatory changes and pulmonary cavities respectively. The patient was treated with Ceftriaxone before being discharged with a 6-month course of Linezolid. He made a good recovery with reduction in size of the cavitating lung lesions on follow-up imaging.</p><p><strong>Conclusions: </strong>This case report presents a difficult-to-diagnose bacterial infection in an intravenous drug user, complicated by bacteraemia and secondary septic emboli. Relatively little is known about Actinomyces funkei, and therefore this report aims to increase clinician awareness of diagnosis, management, and complications.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"55"},"PeriodicalIF":3.6,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11345999/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142073883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence and associated factors of TB and HIV coinfections among adult inmates with presumptive pulmonary TB in a Kenyan prison.","authors":"Suleiman Athuman Mwatenga, Ali A Musa, Margaret W Muturi, Abednego Moki Musyoki","doi":"10.1186/s41182-024-00623-2","DOIUrl":"10.1186/s41182-024-00623-2","url":null,"abstract":"<p><strong>Background: </strong>Tuberculosis (TB) is more than ten times higher in prisons compared to the general population, and HIV-infected persons are at increased risk of developing active TB and death. In the World Health Organization (WHO) African region, however, where the TB and HIV coinfections are highest, and prisons rarely factored in national disease surveillance, epidemiological data to inform TB control interventions in correctional facilities is limited. In this study, we assessed the prevalence of TB and HIV coinfections, as well as the factors associated with coinfections in our study setting.</p><p><strong>Methods: </strong>This was a prospective cross-sectional study among 157 adult (≥ 18 years) prisoners presenting with symptoms of pulmonary TB at Shimo La Tewa Prison, Kenya, between January and June 2023. The study excluded those with a history of anti-TB drugs use or on treatment follow-up and collected demographic and clinical characteristics data using a questionnaire. Sputum samples were collected and processed immediately using Xpert® MTB/RIF assay or stored at 4 °C for three (3) days in case of delay.</p><p><strong>Results: </strong>The overall prevalence of TB among inmates with presumptive pulmonary TB was 10.2%, 95% CI 6.37-16.91% (16/157), HIV 19.1%, 95% CI 13.73-25.97% (30/157). All the TB cases were positive for HIV (16/16, 100%), translating to TB/HIV coinfection of 10.2%, 95% CI 6.37-16.91% (16/157), and there was no rifampicin resistance. TB and HIV coinfection cases were found among underweight (100%, 16/16) prisoners. The independent factors associated with TB and HIV coinfections were education level (adjusted OR = 0.17, p = 0.007), smoking history (adjusted OR = 3.01, p = 0.009) and illegal drug use history (adjusted OR = 4.55, p = 0.044).</p><p><strong>Conclusion: </strong>We report a high prevalence of pulmonary TB and HIV coinfections among adult inmates with presumptive pulmonary TB in Kenya, with education level, smoking status, and illegal drug use as the independent factors associated with the coinfection. The authority should take measures to protect HIV-positive prisoners from TB, focusing on education, nutrition, smoking, and illegal drug use.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"54"},"PeriodicalIF":3.6,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11328499/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141989005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors associated with the uptake of COVID-19 vaccination, testing and medical care among Myanmar migrants in Japan: a cross-sectional study.","authors":"Moe Moe Thandar, Azusa Iwamoto, Haru Angelique Hoshino, Kyoko Sudo, Mihoko Fujii, Miwa Kanda, Saki Ikeda, Masami Fujita","doi":"10.1186/s41182-024-00621-4","DOIUrl":"10.1186/s41182-024-00621-4","url":null,"abstract":"<p><strong>Background: </strong>Migrants are individuals who move to a different country from their usual place of residence. Japan's migrant population, particularly technical interns and students, has been growing. Even before the pandemic, previous studies have highlighted difficulties faced by migrants in utilizing healthcare services. This study examined the uptake of COVID-19 vaccination, testing, and medical care among Myanmar migrants in Japan; identified the factors associated with this uptake; and described the difficulties encountered when utilizing these services.</p><p><strong>Methods: </strong>A cross-sectional study was conducted between March and April 2023 targeting Myanmar migrants over 18 years residing in Japan for more than 6 months. An online self-administered questionnaire in Myanmar language covered socioeconomic characteristics; history of COVID-19 vaccination, testing, and medical care; and difficulties encountered while utilizing these services with multiple-choice questions. Multivariate logistic regression analysis was performed separately to identify the factors associated with the uptake of COVID-19 vaccination, testing, and medical care.</p><p><strong>Results: </strong>Among the 207 participants, 52% (n = 108) were under 30 years, 30% (n = 62) were male, and 31% (n = 65) were low-skilled workers (technical interns and students). Overall, 91% (n = 189) had received the COVID-19 vaccination, 76% (n = 157) had been tested for COVID-19, and 43% (n = 68) tested positive. However, only 77% (n = 52) of COVID-19 patients sought medical care. Participants under 30 years of age were less likely to receive the COVID-19 vaccine compared to those aged 30 and older (adjusted odds ratio [aOR] 0.10, 95% confidence interval [CI] 0.01-0.88, p = 0.038). Low-skilled workers were less likely to seek medical care compared to those holding other categories of residential status (aOR 0.12, 95% CI 0.02-0.79, p = 0.027). Among service users, 5% faced difficulties with COVID-19 vaccination, 10% with testing, and 17% with receiving medical care. Long waiting times and complex reservation processes were the main difficulties encountered.</p><p><strong>Conclusions: </strong>The uptake of COVID-19 vaccination, testing, and medical care in this sample was reasonably good. However, individuals under 30 years of age showed lower uptake of vaccination, while low-skilled workers had lower uptake of medical care. Strengthening education and support for young migrants and low-skilled workers regarding COVID-19 and other infectious diseases is essential, especially in workplaces and educational institutions.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"53"},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11302098/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141898346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-random distribution of Plasmodium Species infections and associated clinical features in children in the lake Victoria region, Kenya, 2012-2018.","authors":"Protus Omondi, Brian Musyoka, Takatsugu Okai, James Kongere, Wataru Kagaya, Chim W Chan, Mtakai Ngara, Bernard N Kanoi, Yasutoshi Kido, Jesse Gitaka, Akira Kaneko","doi":"10.1186/s41182-024-00622-3","DOIUrl":"10.1186/s41182-024-00622-3","url":null,"abstract":"<p><strong>Background: </strong>While Plasmodium falciparum (Pf) stands out as the most lethal malaria parasite species in humans, the impact of other species should not be dismissed. Moreover, there is a notable lack of understanding of mixed-species infections and their clinical implications.</p><p><strong>Methods: </strong>We conducted eight school-based cross-sectional malariometric surveys in the Lake Victoria region of western Kenya between January-February 2012 and September-October 2018. In each survey, a minimum of 100 children aged 3 to 15 years were randomly chosen from a school in Ungoye village on the mainland and as well as from each school selected in every catchment area on Mfangano island. Plasmodium infection was determined by microscopy and nested polymerase chain reaction (PCR). The multiple-kind lottery (MKL) model calculated the expected distribution of Plasmodium infections in the population and compared it to observed values using a chi-squared test (χ²).</p><p><strong>Results: </strong>The Plasmodium prevalence was 25.9% (2521/9724) by microscopy and 51.1% (4969/9724) by PCR. Among all infections detected by PCR, Pf, P. malariae (Pm), and P. ovale (Po) mono-infections were 58.6%, 3.1%, and 1.8%, respectively. Pf/Pm, Pf/Po, Pm/Po, and Pf/Pm/Po co-infections were 23.5%, 4.3%, 0.1%, and 8.6%, respectively. MKL modelling revealed non-random distributions, with frequencies of Pf/Pm and Pf/Pm/Po co-infections being significantly higher than expected (χ² = 3385.60, p < 0.001). Pf co-infections with Pm and Po were associated with a decreased risk of fever (aOR 0.64, 95% CI 0.46-0.83; p = 0.01) and increased risks of splenomegaly (aOR 12.79, 95% CI 9.69-16.9; p < 0.001) and anaemia (aOR 2.57, 95% CI 2.09-3.15; p < 0.001), compared to single-species infections.</p><p><strong>Conclusion: </strong>This study sheds light on the potential interaction between Pf and Pm and/or Po. Given the clinical significance of mixed-species infections, improved diagnostics, and case management of Pm and Po are urgently needed.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"52"},"PeriodicalIF":3.6,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11299388/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal occurrence and habitat characteristics of Aedes aegypti (Diptera: Culicidae) larvae in Southern Afar region, Ethiopia.","authors":"Mohammed Seid, Esayas Aklilu, Abebe Animut","doi":"10.1186/s41182-024-00612-5","DOIUrl":"10.1186/s41182-024-00612-5","url":null,"abstract":"<p><strong>Background: </strong>Describing spatio-temporal occurrence and habitat characteristics of Aedes mosquito larvae is crucial for the control of Aedes borne viral diseases. This study assessed spatio-temporal abundance and habitat characteristics of Aedes larvae in the Southern Afar Region, Ethiopia.</p><p><strong>Methods: </strong>Immature mosquitoes were surveyed in Awash Sebat, Awash Arba, and Werer towns of the Southern Afar Region once per month from May 2022 to April 2023. Larvae and pupae surveys were carried out along the available water-holding containers. The collected larvae/pupae were reared to adults and identified by  species/genus morphologically. The physical and chemical properties of the habitats were also characterized.</p><p><strong>Results: </strong>A total of 9099 Aedes larvae/pupae were collected, of which 53.6% (4875) were from Awash Sebat, 29.5% (2687) from Awash Arba and 16.9% (1537) from Werer. Water-holding tyres harboured the highest number of Aedes larvae/pupae followed by water-storage drums. All the Aedes larvae/pupae reared to adults were morphologically identified as Aedes aegypti. The overall Container Index was 47.28%, House Index 18.19%, Breteau Index 59.94% and Pupal Index 171.94. Significant positive relations were observed in the occurrences of Ae. aegypti larvae/pupae with water-holding tyre (AOR = 15.89, CI = 3.55-71.09, p < 0.001), water storage drums (AOR = 19.84, CI = 4.64-84.89, p < 0.001), domestic habitat (AOR = 3.76, CI = 1.27-11.12, p = 0.017), and significant negative relations were observed with Ae. aegypti larvae/pupae occurrence and tap water source (AOR = 0.08, CI = 0.02-0.31, p = 0.001). Ae. aegypti larvae/pupae densities showed positive relations with dissolved oxygen (β = 0.523, p < 0.001) and total hardness (β = 0.475, p = 0.034) of water.</p><p><strong>Conclusions: </strong>Diverse types of artificial water-holding containers were positive for Ae. aegypti larvae/pupae. Ae. aegypti larvae/pupae were abundant in used water-holding tyres, water storage drums, and cement tanks in Awash Sebat, Awash Arba, and Werer towns. This could  put the residents of the towns at high risk of infections with Ae. aegypti transmitted viral diseases such as chikungunya and dengue outbreaks. Thus, we recommend artificial water-holding container management as a strategy to control Ae. aegypti and hence the arboviral diseases transmission.</p>","PeriodicalId":23311,"journal":{"name":"Tropical Medicine and Health","volume":"52 1","pages":"51"},"PeriodicalIF":3.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11295501/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}