Journal of Parasitology最新文献

{"title":"SEROPREVALENCE OF TOXOPLASMA GONDII INFECTION IN PIGS FROM SOUTHWESTERN MISSISSIPPI.","authors":"Alexander D W Acholonu, Mary I Coleman","doi":"10.1645/23-79","DOIUrl":"10.1645/23-79","url":null,"abstract":"<p><p>Toxoplasma gondii infection of swine is a potential public health concern because it can be acquired by humans through the handling and consumption of contaminated raw meat. Infections in immunocompromised individuals and fetuses are the most severe and these individuals are most likely to develop clinical toxoplasmosis. Since Mississippians consume a lot of pork, there was a significant need to know the extent to which it poses a health problem in the State. This study focused on the southwestern region of Mississippi. Between July 2003 and March 2004, blood samples were collected from slaughterhouses in southwestern Mississippi and the Alcorn State University swine farm in Churchill, Mississippi. The collected blood samples were centrifuged and the sera were collected, labeled, and stored in a freezer at -20 C. The modified agglutination test was performed at dilutions of 1:25, 1:50, and 1:500. A titer of 25 was considered seropositive. Of a total of 302 samples tested, 48 (16%) were positive at a titer of 25; 29 (10%) were positive at 50; 11 (4%) were positive at 500. The seroprevalence of T. gondii in pigs in southwestern Mississippi is not as high as previous studies done in Mississippi. This could be attributed to the sample size. However, the potential for infection still exists.</p>","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"110 1","pages":"8-10"},"PeriodicalIF":1.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139485705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SEROPREVALENCE TO SCHISTOSOMA SOLUBLE EGG ANTIGEN AMONG NOMADIC PASTORALISTS RESIDING IN NORTHERN SENEGAL","authors":"Mame Cheikh Seck, Aida Sadikh Badiane, Julie Thwing, Mouhamadou Ndiaye, Khadim Diongue, Ibrahima Mbaye Ndiaye, Mamadou Alpha Diallo, Mohamed Sy, Jules François Gomis, Tolla Ndiaye, Aminata Gaye, Yeuk-Mui Lee, W. Evan Secor, Daouda Ndiaye, Eric Rogier","doi":"10.1645/22-69","DOIUrl":"https://doi.org/10.1645/22-69","url":null,"abstract":"<p>Urinary and intestinal schistosomiasis are endemic in Senegal, with prevalence heterogeneous throughout the country. Because of their way of life, nomadic pastoralists are not typically included in epidemiological surveys, and data on the prevalence of schistosomiasis in Senegalese nomadic populations are largely non-existent. The purpose of this study was to determine the seroprevalence of schistosomiasis in Senegalese nomadic pastoralists. A modified snowball sampling survey was conducted among 1,467 nomadic pastoralists aged 6 mo and older in 5 districts in northern Senegal. Dried blood spots from participants of all ages and data regarding demographics were collected to assess IgG antibody responses against <em>Schistosoma mansoni</em> soluble egg antigen (SEA) using a bead-based multiplex assay. Out of 1,467 study subjects, 1,464 (99.8%) provided IgG serological data that cleared quality assurance. Of the participants with appropriate data, 56.6% were male, the median age was 22 yr, and 31.6% were under 15 yr of age. The overall anti-SEA IgG seroprevalence was 19.1% (95% confidence interval [CI]: 17.1–21.1%) with the highest estimates observed in Dagana (35.9%) and the lowest observed in Podor nomadic groups (3.4%). Antibody responses increased significantly with age except for the oldest age groups (&gt;40 yr of age), which saw lower levels of antibody response compared to younger adults. When controlling for age and location by multivariate regression, the male sex was associated with a 2-fold greater odds of anti-SEA IgG seropositivity (aPOR: 2.0; 95% CI: 1.5–2.7). Serosurveys for anti-SEA IgG among nomadic peoples in northern Senegal found a substantial percentage of individuals with evidence for current or previous <em>Schistosoma</em> spp. infection with the highest levels of exposure in the district adjacent to the Diama dam along the Senegal River. With IgG prevalence increased by age except in the older adults, and the male sex significantly associated with seropositivity, these data point toward sex-associated behavioral practices and human environmental modification as risk factors for <em>Schistosoma</em> exposure.</p>","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"70 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138628241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TEMPERATURE AND SALINITY AFFECT DEVELOPMENT OF THE PARASITIC SEA ANEMONE EDWARDSIELLA LINEATA POTENTIALLY LIMITING ITS IMPACT AS A BIOLOGICAL CONTROL ON THE CTENOPHORE MNEMIOPSIS LEIDYI","authors":"Joanna Lee, Riley Secor, Nadiya Prokopyeva, Xuqing Chen, Ophelia Macdonald, Ryan Frost, John R. Finnerty","doi":"10.1645/23-15","DOIUrl":"https://doi.org/10.1645/23-15","url":null,"abstract":"<p>The lined sea anemone,<em> Edwardsiella lineata</em>, parasitizes the ctenophore<em> Mnemiopsis leidyi</em>, which is one of the most destructive marine invasive species in the world. <em>Mnemiopsis leidyi</em> is known to tolerate a wide range of environmental conditions. However, the environmental tolerances of its most prominent parasite have never been characterized. Here we determined the effects of temperature (18, 22, 26, and 30 C) and salinity (6, 15, 24, and 33 ppt) on the survival and development of <em>E. lineata</em> from a vermiform parasite to a free-living polyp. At higher temperatures and lower salinities, <em>E. lineata</em> experienced significantly higher mortality, and it failed to develop into an adult polyp at the highest temperature (30 C) and lowest salinities we tested (6 ppt or 15 ppt). While such temperature and salinity restrictions would not currently prevent <em>E. lineata</em> from infecting<em> M. leidyi</em> in many of the European waters where it has become a destructive invasive species, these environmental limitations may be reducing overlap between host and parasite within the host’s native range, a situation that could be exacerbated by climate change.</p>","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138566613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO-INFECTION WITH MALARIA AND INTESTINAL PARASITES AND ITS ASSOCIATION WITH ANEMIA IN CHILDREN (ZERO TO TEN YEARS OLD) IN TIKO SUBDIVISION, CAMEROON.","authors":"Nicoline Fri Tanih, Kemba Iya Belinga, Raymond Nyasa, Godfred Ngu Tanih, Jerome Fru Cho, Amidou Samie, Anna Longdoh Njunda","doi":"10.1645/23-48","DOIUrl":"10.1645/23-48","url":null,"abstract":"<p><p>Concomitant infections with malaria and intestinal parasitic infections may be associated with anemia in children (0-10 yr). This study determined the prevalence of co-infection with malaria and intestinal parasitic infections and determined its association with anemia in children (0-10 yr) in Tiko, Cameroon. A hospital-based cross-sectional study was carried out whereby venous blood and stool samples were collected from 377 febrile children. Blood was used to perform a full blood count. Thick and thin blood films were prepared and stained with Giemsa for malaria parasite diagnosis. The formol ether concentration technique was used to analyze the stools. Pearson's chi-square test, Student's t-test, and other statistical analyses were performed. Of the 377 participants, 139 (36.9%) were positive for malaria, 21 (5.6%) had intestinal helminths, 8 (2%) had co-infection, and 79 (21.0%) were anemic. Malaria and anemia were prevalent among the children and were significantly associated (P = 0.025). There was no statistically significant difference (P > 0.05) among age groups. Girls were more often infected with malaria (69, 37.3%), and boys were more often infected with intestinal parasites (13, 7.0%), but there was no statistical association for both malaria and intestinal parasitic infections (IPIs) for both sexes (P > 0.05). Hookworms, Ascaris lumbricoides, and Trichuris trichiura were the intestinal parasites found in this study. There was a significant association between anemia and parasitic co-infection in children (P = 0.003). Malaria and IPIs are prevalent in the Tiko municipality. They play a great role in anemia especially when there is a co-infection. Public education and awareness campaigns are necessary in this municipality.</p>","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"109 6","pages":"615-621"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139048865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AMERICAN SOCIETY OF PARASITOLOGISTS Ninety-Eighth Annual Business Meeting 16 July 2023 Intercontinental Kansas City at the Plaza, Kansas City, Missouri.","authors":"Lee Couch","doi":"10.1645/23-75","DOIUrl":"10.1645/23-75","url":null,"abstract":"","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"109 6","pages":"685-686"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139074376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INTRODUCTION OF CHARLES D. CRISCIONE, RECIPIENT OF THE HENRY BALDWIN WARD MEDAL FOR 2023.","authors":"Jillian T Detwiler","doi":"10.1645/23-78","DOIUrl":"10.1645/23-78","url":null,"abstract":"","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"109 6","pages":"653-654"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139074380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INTRODUCTION OF TAMARA J. COOK, THE 2022-2023 PRESIDENT OF THE AMERICAN SOCIETY OF PARASITOLOGISTS.","authors":"Joanna J Cielocha","doi":"10.1645/23-77","DOIUrl":"10.1645/23-77","url":null,"abstract":"","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"109 6","pages":"644-645"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139074381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"POPULATION STRUCTURE AND BARTONELLA QUINTANA IN HEAD AND BODY LICE IN POKHARA, NEPAL (ANOPLURA: PEDICULIDAE).","authors":"Shreekanta S Poudel, Jefferson A Vaughan","doi":"10.1645/23-64","DOIUrl":"10.1645/23-64","url":null,"abstract":"<p><p>This study examined the population structure of head and body lice infesting a random sample of people in Pokhara, Nepal during 2003, 2004, and 2005. A total of 106 participants (6 to 72 yr old, median = 12) volunteered to have lice collected from their heads and clothing. Most participants (70%) harbored only head lice, some (15%) had only body lice, and some (15%) had concurrent infestations of head and body lice (dual infestations). A total of 1,472 lice was collected. Significantly more nymphs were collected than adult lice. Louse populations were generally small (geometric mean = 8.8 lice per person) but a few participants harbored larger louse populations (maximum = 65 lice). People with dual infestations harbored significantly more lice than people with single infestations; however, there was no difference in the infestation intensities between people infested with head lice only vs. those infested with body lice only. Male participants harbored significantly more lice than did females. There were no significant differences in infestation intensity due to participant age or their socioeconomic level. The sex ratio of adult lice was increasingly female biased with increasing adult louse density. Infection of lice with Bartonella quintana was low (ca. 1.5%). Pediculosis is a common problem in urban Nepal.</p>","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"109 6","pages":"559-564"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138451726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ACCEPTANCE OF THE 2023 HENRY BALDWIN WARD MEDAL: PEDIGREE OF A PARASITOLOGIST PROGENY.","authors":"Charles D Criscione","doi":"10.1645/23-72","DOIUrl":"10.1645/23-72","url":null,"abstract":"","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"109 6","pages":"655-662"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139074375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AMERICAN SOCIETY OF PARASITOLOGISTS One Hundred Thirteenth Annual Council Meeting 13 July 2023 Intercontinental Hotel at the Plaza, Kansas City, Missouri.","authors":"Lee Couch","doi":"10.1645/23-74","DOIUrl":"10.1645/23-74","url":null,"abstract":"","PeriodicalId":16659,"journal":{"name":"Journal of Parasitology","volume":"109 6","pages":"666-684"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139074377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}