Claudio F Lanata, Giselle Soto, Ana I Gil, Joan Neyra, Rubelio Cornejo, Candice Romero, Lucie Ecker, Maria L Huaylinos, Sayda La Rosa, Ana Goios, Astrid Borkowski, John Weil
{"title":"Epidemiology of norovirus disease in the first 2 years of life: A prospective multisite cohort study in Lima, Peru.","authors":"Claudio F Lanata, Giselle Soto, Ana I Gil, Joan Neyra, Rubelio Cornejo, Candice Romero, Lucie Ecker, Maria L Huaylinos, Sayda La Rosa, Ana Goios, Astrid Borkowski, John Weil","doi":"10.1016/j.ijid.2024.107308","DOIUrl":"10.1016/j.ijid.2024.107308","url":null,"abstract":"<p><strong>Objectives: </strong>Norovirus is associated with 18% of acute gastroenteritis (AGE) cases worldwide. We aim to document the norovirus-related AGE incidence in peri-urban areas of Lima (Peru), evaluating the potential impact of a norovirus vaccine introduction.</p><p><strong>Methods: </strong>A prospective, community-based pediatric cohort study was established at two sites in Lima. Healthy children between 5 and 18 months were contacted weekly for AGE detection during a 6-month period. Stool samples from AGE cases were tested for norovirus by RT-PCR. Incidence and coinfection of norovirus-associated AGE were analyzed. All norovirus-positive samples were genotyped by Sanger DNA sequencing.</p><p><strong>Results: </strong>Among 498 enrolled children, 461 (93%) completed the follow-up period. We detected 799 AGE cases, yielding 676 valid stool samples. Norovirus was detected in 216 samples (32%), with an incidence of 7.7 episodes per 100 child-months (95% CI: 6.7-8.8). Genotypes GII.4 (31%) and GII.6 (22%) were frequent. Campylobacter (43%) and Salmonella spp. (15%) were the most common coinfections with norovirus. Ninety-five percent of study children had received an oral rotavirus vaccine.</p><p><strong>Conclusion: </strong>Norovirus was the second most frequent cause of AGE in this Peruvian cohort with high rotavirus vaccine coverage. An effective norovirus vaccine would have an important public health benefit in this population.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107308"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142695589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qi Tan, Chuan-Chin Huang, Roger Calderon, Leonid Lecca, Milagros Mendoza, Gabriela Reyes Rocha, Karen Tintaya, Ximena Tovar, Jia-Yih Feng, Sheng-Wei Pan, Yen-Han Tseng, Jhong-Ru Huang, Zibiao Zhang, Megan B Murray
{"title":"Microbiological aspects and clinical impact of lower lung field tuberculosis: An observational cohort study in Peru.","authors":"Qi Tan, Chuan-Chin Huang, Roger Calderon, Leonid Lecca, Milagros Mendoza, Gabriela Reyes Rocha, Karen Tintaya, Ximena Tovar, Jia-Yih Feng, Sheng-Wei Pan, Yen-Han Tseng, Jhong-Ru Huang, Zibiao Zhang, Megan B Murray","doi":"10.1016/j.ijid.2024.107284","DOIUrl":"10.1016/j.ijid.2024.107284","url":null,"abstract":"<p><strong>Objectives: </strong>Approximately 40% of tuberculosis (TB) cases remain undiagnosed globally. Lower lung field TB (LLF TB) presents atypically and is often misidentified as other lung diseases, leading to diagnostic delays in resource-limited settings. It may contribute to increased TB transmission and mortality. We aimed to identify microbiological determinants of LLF TB and evaluate treatment responses to optimize care.</p><p><strong>Methods: </strong>We conducted an observational cohort study in Lima, Peru, enrolling adults with microbiologically confirmed pulmonary TB (PTB) diagnosed by GeneXpert MTB/RIF assay or sputum culture. Mycobacterium tuberculosis (MTB) lineage was determined using whole-genome sequencing. Due to the delayed chest radiograph changes in LLF TB compared to non-LLF TB, we measured changes in the St. George's Respiratory Questionnaire (SGRQ) score at 2-month treatment mark and evaluated World Health Organization-specified final treatment outcomes. We used logistic regression to evaluate the associations between LLF TB and microbiological determinants and treatment outcomes. We used linear regression to assess whether the change in SGRQ scores over the first 2 months of treatment varied by LLF TB status.</p><p><strong>Results: </strong>Among 1316 PTB patients, 84 (6%) had LLF TB. Compared to non-LLF TB patients, LLF TB patients were more likely to be smear-negative (adjusted odds ratio [aOR] [95% CI] = 2.04 [1.28-3.23], P = 0.002) and to be infected with Lineage 2 (aOR [95% CI] = 1.95 [95% CI: 1.07-3.41; P = 0.024]). People with LLF TB had less improvement in SGRQ scores after 2 months of treatment (adjusted score difference [95% CI] = -6.29 [-10.99 to -1.59], P = 0.009), while they experienced better final outcomes compared to non-LLF TB patients, though this difference did not reach statistical significance (aOR = 0.43 [95% CI: 0.13-1.05], P = 0.103).</p><p><strong>Conclusion: </strong>Patients with LLF TB are more likely than those with upper lung lesions to be sputum-negative on conventional tests, to be infected with Lineage 2, and to show less clinical improvement after treatment.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107284"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xueying Yang, Jiajia Zhang, Ziang Liu, Shujie Chen, Sharon Weissman, Gregory A Poland, Refilwe Nancy Phaswana-Mafuya, Bankole Olatosi, Xiaoming Li
{"title":"Real-world effectiveness of COVID-19 vaccine in people with HIV compared with a matched HIV-negative cohort: A test-negative design.","authors":"Xueying Yang, Jiajia Zhang, Ziang Liu, Shujie Chen, Sharon Weissman, Gregory A Poland, Refilwe Nancy Phaswana-Mafuya, Bankole Olatosi, Xiaoming Li","doi":"10.1016/j.ijid.2024.107310","DOIUrl":"10.1016/j.ijid.2024.107310","url":null,"abstract":"<p><strong>Objectives: </strong>We estimated vaccine effectiveness (VE) against SARS-CoV-2 infection among a statewide cohort of people with HIV (PWH) and compared the estimates with a matched cohort of people without HIV (PWoH) in South Carolina (SC), USA.</p><p><strong>Methods: </strong>A population-based cohort was retrieved from statewide electronic health records between January 2, 2021, and April 14, 2022, during which several variants were circulating in SC (i.e., Alpha, Delta, Omicron). We compared the odds of vaccination between test-positive cases and test-negative controls using logistic regression models for both SARS-CoV-2 infection and severe COVID-19 outcomes. The VE was derived as (1 - adjusted odds ratio) × 100%.</p><p><strong>Results: </strong>A total of 7279 test episodes in PWH and 72,790 matched test episodes in PWoH were included for analysis, representing 6561 unique PWH and 67,521 unique PWoH. The peak level of VE against SARS-CoV-2 infection occurred 7-59 days after receipt of the second dose of vaccine (PWH: 61.20%; PWoH: 67.09%), followed by a waning protective effect 90-119 days after the second dose in both PWH (35.80%) and PWoH (47.57%), where PWH had a proportionally lower and declined faster VE. Regarding the VE against severe outcomes of SARS-CoV-2 infection, a relatively higher level of protection was maintained in both populations (complete primary series: PWH: 69.06%; PWoH: 60.63%).</p><p><strong>Conclusions: </strong>A complete primary series of COVID-19 vaccines offered significant protection against SARS-CoV-2 infection and severe outcomes in both PWH and PWoH populations, although this wanes with time. However, the estimate of VE against SARS-CoV-2 infection appeared lower in PWH than in PWoH and the degree of waning over time was relatively quicker in PWH.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107310"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142710087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Is intestinal colonization with multidrug-resistant Enterobacterales associated with higher rates of nosocomial Enterobacterales bloodstream infections?","authors":"Noureddine Henoun Loukili, Agnes Perrin, Olivier Gaillot, Amelie Bruandet, Fabio Boudis, Boualem Sendid, Saadalla Nseir, Jean-Ralph Zahar","doi":"10.1016/j.ijid.2024.107274","DOIUrl":"10.1016/j.ijid.2024.107274","url":null,"abstract":"<p><strong>Objectives: </strong>Intestinal colonization with multidrug-resistant Enterobacterales (MDRE-IC) increases the risk of MDRE bloodstream infection (BSI). However, its impact on the overall risk of nosocomial Enterobacterales bloodstream infections (nE-BSIs) remains unclear. This study aimed to determine this risk and identify associated factors in hospitalized patients.</p><p><strong>Design: </strong>This retrospective cohort study at a 3200-bed tertiary institution including patients hospitalized in 2019 who underwent MDRE rectal swab (RS) screening. Inclusion criteria were age ≥18 years, first RS in 2019, follow-up ≥7 days, and Enterobacterales BSIs >48 hours after RS. The primary outcome was the first nE-BSI during the follow-up period, analyzed using a Cox model.</p><p><strong>Results: </strong>Among 7006 patients, 817 (11.9%) had MDRE-IC. Most were male and primarily hospitalized in acute wards. nE-BSIs occurred in 433 (6.1%) patients and were more frequent in patients with MDRE-IC than the non-colonized group (adjusted hazard ratio [aHR] = 1.78, 95% confidence interval [CI]: 1.40-2.26). Intestinal colonization with extended-spectrum β-lactamase-producing and carbapenemase-resistant Enterobacterales showed similar risks for Enterobacterales BSI onset: aHR = 1.73 (95% CI: 1.33-2.24) and aHR = 2.02 (95% CI: 1.27-3.22), respectively.</p><p><strong>Conclusions: </strong>In hospitalized patients, MDRE-IC is associated with a higher rate of nE-BSI than those without MDRE-IC, underscoring the urgent need for improved infection prevention and control measures, as well as optimized antibiotic use to mitigate this risk.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107274"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Faria Hossain, Prakash Ghosh, Fazle Rabbi Chowdhury, Ariful Basher, Hafez Mohammad Nazmul Ahsan, Abed Hussain Khan, Samshad Jahan Shumu, Tanzina Jahan, Chandan Kumar Roy, A K M Nahid Arefin, Fahmida Khanam, Md Abu Rahat, Rajashree Chowdhury, Md Rasel Uddin, Mohammad Sohel Shomik, Shomik Maruf, Md Utba Rashid, Soumik Kha Sagar, Nishad Tasnim Mithila, Md Arko Ayon Chowdhury, Mostafa Kamal, Ashik Sharfaraz, Debashis Ghosh, Anup Chowdhury, Arif Hasan Chowdhury, Zazeba Hossain, Fahad Arefeen, Md Sohidul Islam, S M Mahbubur Rahman, T M Al-Amin, Abdur Rashid, Kuntala Kumkum Shukla, Shapla Roy, Md Sohel Rana, Md Sarwar Hossain, Martin Siegel, Ahmed Abd El Wahed, Dinesh Mondal
{"title":"Evaluating a rapid molecular assay in a mobile laboratory for improved diagnosis of dengue in Bangladesh.","authors":"Faria Hossain, Prakash Ghosh, Fazle Rabbi Chowdhury, Ariful Basher, Hafez Mohammad Nazmul Ahsan, Abed Hussain Khan, Samshad Jahan Shumu, Tanzina Jahan, Chandan Kumar Roy, A K M Nahid Arefin, Fahmida Khanam, Md Abu Rahat, Rajashree Chowdhury, Md Rasel Uddin, Mohammad Sohel Shomik, Shomik Maruf, Md Utba Rashid, Soumik Kha Sagar, Nishad Tasnim Mithila, Md Arko Ayon Chowdhury, Mostafa Kamal, Ashik Sharfaraz, Debashis Ghosh, Anup Chowdhury, Arif Hasan Chowdhury, Zazeba Hossain, Fahad Arefeen, Md Sohidul Islam, S M Mahbubur Rahman, T M Al-Amin, Abdur Rashid, Kuntala Kumkum Shukla, Shapla Roy, Md Sohel Rana, Md Sarwar Hossain, Martin Siegel, Ahmed Abd El Wahed, Dinesh Mondal","doi":"10.1016/j.ijid.2024.107299","DOIUrl":"10.1016/j.ijid.2024.107299","url":null,"abstract":"<p><strong>Objectives: </strong>Dengue emerged as a significant health threat in endemic regions in recent years. However, inconsistent diagnostic accuracy in sequential dengue infections necessitate improved testing methods to ensure effective management of dengue cases. Here, we evaluated a portable, rapid, and sensitive molecular assay-reverse transcriptase recombinase polymerase amplification assay (RT-RAA)-utilizing a mobile suitcase laboratory to detect infections in suspected dengue cases in Bangladesh.</p><p><strong>Methods: </strong>A total of 364 suspected patients with dengue were enrolled in the study. Dengue cases were confirmed by a positive result from any of the four tests: non-structural protein 1 (NS1) rapid diagnostic test (RDT), immunoglobulin (Ig) M RDT, quantitative reverse transcriptive-polymerase chain reaction (RT-PCR), and RT-RAA assay. IgG RDT was performed to differentiate between primary and secondary dengue infections.</p><p><strong>Results: </strong>Of 364 suspected cases, 320 were confirmed dengue cases, with 55.94% classified as primary and 44.06% as secondary infections. Laboratory results showed comparable positivity rates between RT-RAA (78.8%) and NS1 RDT (77.1%) in primary dengue, followed by quantitative RT-PCR (57.5%) and IgM RDT (12.8%). RT-RAA demonstrated superior positivity rates in secondary dengue (76.6%), surpassing RT-PCR (60.3%), NS1 RDT (27%), and IgM RDT (24.8%). Combining RT-RAA with NS1 RDT detected infections in 89.95% primary and 81.56% secondary dengue.</p><p><strong>Conclusions: </strong>The findings suggest that complementing RT-RAA with NS1 RDT could significantly improve dengue detection rate, particularly, for secondary infections.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107299"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Siméon de Bruijn, Anna D Tulen, Jeroen Rodenburg, Hendriek Boshuizen, Maarten Schipper, Elizabeth N Mutubuki, Hans Knoop, Eelco Franz, Tessa van der Maaden, Susan van den Hof, Albert Jan van Hoek, Cees C van den Wijngaard
{"title":"Post-acute sequelae of COVID-19 3 to 12 months after infection: Delta vs Omicron.","authors":"Siméon de Bruijn, Anna D Tulen, Jeroen Rodenburg, Hendriek Boshuizen, Maarten Schipper, Elizabeth N Mutubuki, Hans Knoop, Eelco Franz, Tessa van der Maaden, Susan van den Hof, Albert Jan van Hoek, Cees C van den Wijngaard","doi":"10.1016/j.ijid.2024.107302","DOIUrl":"10.1016/j.ijid.2024.107302","url":null,"abstract":"<p><strong>Objectives: </strong>Studies have shown temporal changes in post-acute sequelae of COVID-19 (PASC) prevalence for early SARS-CoV-2 variants, although often lacking controls. This prospective study assesses the prevalence of symptoms in Delta- and Omicron-infected cases up to 12 months compared with population controls.</p><p><strong>Methods: </strong>Adult participants filled out surveys every 3 months (T0-T12) between July 2021 and August 2023. Cases were recruited with a positive SARS-CoV-2 test during the Delta or Omicron domination. Population controls were randomly invited from the Dutch Personal Records Database. Participants indicated the presence of 13 PASC-associated symptoms, and severity scores of fatigue, cognitive impairment, dyspnea, and pain. PASC prevalence was defined as the excess prevalence of havingat least one PASC-associated symptom in cases compared with population controls.</p><p><strong>Results: </strong>PASC prevalence was 34.3% at T3 and decreased to 21.7% at T12 for Delta and decreased from 18.7% at T3 to 16.7% at T12 for Omicron. At T12, the difference between Delta and Omicron was not significant. Delta cases generally had higher excess symptom scores for fatigue, dyspnea, and cognitive impairment than Omicron.</p><p><strong>Conclusions: </strong>In the first 9 months after infection, PASC prevalence was higher for Delta than Omicron, but the difference reduced over time and approximated after 12 months.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107302"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jonathon Mellor, Martyn Fyles, Robert S Paton, Alexander Phillips, Christopher E Overton, Thomas Ward
{"title":"Assessing the impact of SARS-CoV-2 on influenza-like illness surveillance trends in the community during the 2023/2024 winter in England.","authors":"Jonathon Mellor, Martyn Fyles, Robert S Paton, Alexander Phillips, Christopher E Overton, Thomas Ward","doi":"10.1016/j.ijid.2024.107307","DOIUrl":"10.1016/j.ijid.2024.107307","url":null,"abstract":"<p><strong>Objectives: </strong>Influenza-like-illness (ILI) is a commonly used symptom categorization in seasonal disease surveillance focusing on influenza in community and clinical settings. However, SARS-CoV-2 often causes presentation with a similar symptom profile. We explore how SARS-CoV-2-positive individuals can influence surveillance trends for the World Health Organization, the United States Centre for Disease Control, and the European Centre for Disease Control (ECDC) ILI criteria.</p><p><strong>Methods: </strong>Harnessing the Winter COVID-19 Infection Study in England, a cohort study, the prevalence of different ILI definitions is modeled using multilevel regression and poststratification using age and spatial stratifications with temporal smoothing. Trends over time across stratifications were compared for SARS-CoV-2 positive and negative individuals to understand differences in ILI trends. Symptom presentation across positive and negative SARS-CoV-2 cases were compared.</p><p><strong>Results: </strong>SARS-CoV-2 symptom profiles are shown to overlap with the ILI case definitions, particularly for \"cough\" and \"fever\", causing SARS-CoV-2 positive individuals to be frequently detected as ILI cases. The trend of SARS-CoV-2 positives is a substantial component of the ILI-modeled trend, driving an earlier perceived peak in prevalence. The ECDC symptom definition was most influenced by SARS-CoV-2 positive individuals.</p><p><strong>Conclusions: </strong>Using a large community cohort we show how SARS-CoV-2 can impact ILI surveillance trends. SARS-CoV-2 makes up a substantial part of the community ILI burden and public health messaging should reflect this when discussing ILI. We show ILI is no longer a strong proxy for influenza activity alone.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107307"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142667921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Delia Goletti, Graeme Meintjes, Bruno B Andrade, Alimuddin Zumla, Shui Shan Lee
{"title":"Insights from the 2024 WHO Global Tuberculosis Report - More Comprehensive Action, Innovation, and Investments required for achieving WHO End TB goals.","authors":"Delia Goletti, Graeme Meintjes, Bruno B Andrade, Alimuddin Zumla, Shui Shan Lee","doi":"10.1016/j.ijid.2024.107325","DOIUrl":"10.1016/j.ijid.2024.107325","url":null,"abstract":"","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107325"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142780083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erika Gómez Martinez, Rodrigo Maciel Alencar, Rosa Amélia Gonçalves Santana, Laila Rowena Albuquerque Barbosa, Anne Cristine Gomes de Almeida, Victor Irungu Mwangi, Sarah Regiane do Nascimento Rocha, Layne Even Borges de Souza, Lucyane Mendes Silva, Yudi Tatiana Pinilla, Norbert Becker, Wuelton Marcelo Monteiro, Marcus Vinicius Guimarães de Lacerda, Tainá Silva Secundino, Raquel Soares Maia Godoy, Nilton Barnabé Rodrigues, Nágila Francinete Costa Secundino, Gisely Cardoso de Melo, Paulo Filemon Paolucci Pimenta
{"title":"Relative efficacy of anti-Plasmodium vivax malaria combination drugs in preventing transmission to two major Anopheles mosquitoes in the first few days of treatment.","authors":"Erika Gómez Martinez, Rodrigo Maciel Alencar, Rosa Amélia Gonçalves Santana, Laila Rowena Albuquerque Barbosa, Anne Cristine Gomes de Almeida, Victor Irungu Mwangi, Sarah Regiane do Nascimento Rocha, Layne Even Borges de Souza, Lucyane Mendes Silva, Yudi Tatiana Pinilla, Norbert Becker, Wuelton Marcelo Monteiro, Marcus Vinicius Guimarães de Lacerda, Tainá Silva Secundino, Raquel Soares Maia Godoy, Nilton Barnabé Rodrigues, Nágila Francinete Costa Secundino, Gisely Cardoso de Melo, Paulo Filemon Paolucci Pimenta","doi":"10.1016/j.ijid.2024.107297","DOIUrl":"10.1016/j.ijid.2024.107297","url":null,"abstract":"<p><strong>Objectives: </strong>The World Health Organization recommends three drug anti-malarial combinations: cloroquine+primaquine, artesiminin+primaquine, and cloroquine+tafenoquine. These combinations aim to eradicate Plasmodium by disrupting its life cycle within the human body. We evaluated the effect of these medications on the vectorial competence of two main vectors in the New World.</p><p><strong>Methods: </strong>We recruited patients diagnosed with malaria vivax from a primary care in Manaus, Amazonas. To determine how different treatments affected vectors, we collected blood samples prior to treatment at the hospital and at six intervals over the next 68 hours at the patient's homes. These samples were used to infect Anopheles darlingi and Anopheles aquasalis. To assess the potential for Plasmodium transmission by bite to a new human host, we analyzed the infection intensity, infection rate, and presence of parasites in the salivary gland of the mosquitoes.</p><p><strong>Results: </strong>The results show the infection of the mosquitoes fed with the patient's blood during the first days of treatment with all three drug combinations. However, the cloroquine+tafenoquine combination was the least effective while artesiminin+primaquine was the most effective.</p><p><strong>Conclusions: </strong>In the first few days of treatment, two main vectors continue to spread malaria vivax from patients, potentially contributing to the ongoing transmission in malaria-endemic regions.</p>","PeriodicalId":14006,"journal":{"name":"International Journal of Infectious Diseases","volume":" ","pages":"107297"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142619993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}