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Aubaneide Batista Guerra, Leonardo Quintão Siravenha, Rogério Valois Laurentino, Rosimar Neris Martins Feitosa, Vânia Nakauth Azevedo, Antonio Carlos Rosário Vallinoto, Ricardo Ishak, Luiz Fernando Almeida Machado
BACKGROUND: Prenatal tests are important for prevention of vertical transmission of various infectious agents. The objective of this study was to describe the prevalence of human immunodeficiency virus (HIV), human T-lymphotropic virus (HTLV), hepatitis B virus (HBV), cytomegalovirus (CMV), rubella virus and vaccination coverage against HBV in pregnant adolescents who received care in the city of Belém, Pará, Brazil. METHODS: A cross-sectional study was performed with 324 pregnant adolescents from 2009 to 2010...
May 16, 2018: BMC Pregnancy and Childbirth
Ademola Hezekiah Fagbami, Anyebe Bernard Onoja
INTRODUCTION: In Nigeria, dengue fever caused by dengue virus, types 1 and 2 has been diagnosed for many years. Although, seroepidemiological surveys have shown that dengue virus activity is, widespread in the country, there is scanty information on dengue, hemorrhagic fever with little attention paid to dengue fever largely, because it presents as classical dengue fever characterized by fever, myalgia, headache, arthralgia, retro-orbital pain, gastro intestinal, symptoms and skin rash...
April 26, 2018: Journal of Infection and Public Health
Aline do Nascimento Benitez, Felippe Danyel Cardoso Martins, Marcelle Mareze, Beatriz de Souza Lima Nino, Eloiza Teles Caldart, Fernanda Pinto Ferreira, Regina Mitsuka-Breganó, Roberta Lemos Freire, Juliana Arena Galhardo, Camila Marinelli Martins, Alexander Welker Biondo, Italmar Teodorico Navarro
Although leishmaniasis has been described as a classic example of a zoonosis requiring a comprehensive approach for control, to date, no study has been conducted on the spatial distribution of simultaneous Leishmania spp. seroprevalence in dog owners and dogs from randomly selected households in urban settings. Accordingly, the present study aimed to simultaneously identify the seroprevalence, spatial distribution and associated factors of infection with Leishmania spp. in dog owners and their dogs in the city of Londrina, a county seat in southern Brazil with a population of half a million people and ranked 18th in population and 145th in the human development index (HDI) out of 5570 Brazilian cities...
June 1, 2018: Preventive Veterinary Medicine
Luciano Pamplona de Góes Cavalcanti, Rafael Henrique Machado Sacramento, Fernanda Montenegro de Carvalho Araújo, Danielle Malta Lima, Carlos Carlos Henrique Alencar, Victor Emanuel Pessoa Martins, Lucas Venâncio Araújo, Tais Castelo de Oliveira
OBJECTIVE: Dengue remains an important public health problem in Brazil. We estimated the associated factors of dengue seroprevalence among native Indians of the Tremembé ethnic and their knowledge about the aspects related to the presence of mosquitoes of the genus Aedes. METHODS: An analytical cross-sectional study and a prospective environmental study to monitor the trapping of mosquito eggs monthly were performed. The serological portion of the study involved indigenous people living in the village of Tapera in northeastern Brazil...
April 19, 2018: Tropical Medicine & International Health: TM & IH
Qiongjie Zhou, Qiaomei Wang, Haiping Shen, Yiping Zhang, Shikun Zhang, Xiaotian Li, Ganesh Acharya
AIM: The aims of this study were to investigate the regional differences in seroepidemiology of toxoplasmosis in preconception period among Chinese women of reproductive age and to evaluate associated risk factors. METHODS: This national, population-based, cross-sectional serosurvey covered all 31 provinces and province-level municipalities in Mainland China. Married women intending to get pregnant within 6 months between 2010 and 2012 were recruited. Information on demographic characteristics (age, place of residence, occupation, dietary habits and exposure to cat) was obtained using interviews, and venous blood samples were collected to screen for Toxoplasma gondii infection...
April 19, 2018: Journal of Obstetrics and Gynaecology Research
Virgilio S António, Argentina F Muianga, Janett Wieseler, Sádia A Pereira, Vanessa O Monteiro, Flora Mula, Imelda Chelene, Inocêncio S Chongo, John O Oludele, Beate M Kümmerer, Eduardo S Gudo
BACKGROUND: The burden and spread of chikungunya virus (CHIKV) are rapidly increasing worldwide, but the epidemiology in Mozambique is barely known. The aim of this study was to determine the seroepidemiology of CHIKV in central and northern Mozambique. METHODS: A cross-sectional study was conducted between March 2015 and May 2016 in eight health facilities situated in central and northern Mozambique to recruit 392 patients with undifferentiated febrile illness from outpatient clinics...
April 19, 2018: Vector Borne and Zoonotic Diseases
Barbara V Lago, Francisco C A Mello, Tairine M Barros, Vinicius M Mello, Livia M Villar, Lia L Lewis-Ximenez, Maria Inês M C Pardini, Elisabeth Lampe
In Brazil, the Amazon Basin is endemic for hepatitis D virus (HDV) infection; however, studies in other regions of the country are scarce. This study aims to map the seroepidemiological situation of anti-Delta antibodies in chronic hepatitis B carriers in all five Brazilian geographic regions. Serum samples from 1240 HBsAg positive individuals (55.4% men; mean age 43.1 ± 13.4 years) from 24 of 26 Brazilian states were tested for the presence of anti-Delta antibodies using a commercial immunoassay. Anti-Delta antibodies were detected in 40 samples (3...
April 16, 2018: Journal of Medical Virology
F Alarid-Escudero, E A Enns, R F MacLehose, J Parsonnet, J M Torres, K M Kuntz
Helicobacter pylori (H. pylori) is present in the stomach of half of the world's population. The force of infection describes the rate at which susceptibles acquire infection. In this article, we estimated the age-specific force of infection of H. pylori in Mexico. Data came from a national H. pylori seroepidemiology survey collected in Mexico in 1987-88. We modelled the number of individuals with H. pylori at a given age as a binomial random variable. We assumed that the cumulative risk of infection by a given age follows a modified exponential catalytic model, allowing some fraction of the population to remain uninfected...
April 16, 2018: Epidemiology and Infection
Erinn Sanstead, Nicole E Basta, Karen Martin, Victor Cruz, Kristen Ehresmann, Shalini Kulasingam
Seroepidemiologic studies, which measure serum antibody levels produced in response to infection and/or vaccination, can be valuable tools for gaining insight into population level dynamics of infectious diseases. However, because seroepidemiologic studies are expensive and logistically challenging, they are not routinely conducted for surveillance purposes. We have identified a novel venue, state fairgrounds, in which annual sera samples from a population may be rapidly collected with minimal recruitment expenses...
April 7, 2018: Journal of Community Health
Yuan-Ming Lee, Pei-Shih Hung, Cheng-Wen Lin
Objectives Human herpesvirus 8 (HHV-8) is transmissible and causes Kaposi's sarcoma and other malignancies. This study analyzed the seroepidemiology and phylogeny of HHV-8 among 515 injection drug users (IDUs) and 229 men who have sex with men (MSM) in Taiwan. Methods Blood and peripheral mononuclear cells were analyzed for HHV-8 seroprevalence using enzyme-linked immunosorbent and immunofluorescence assays. Viral loads were measured using a real-time PCR assay. Phylogenetic analysis of the K1 gene was performed using nested PCR and DNA sequencing...
January 1, 2018: Journal of International Medical Research
Jennifer L Kwan, Amy E Seitz, Michal Fried, Kun-Lin Lee, Simon Metenou, Robert Morrison, Edward Kabyemela, Thomas B Nutman, D Rebecca Prevots, Patrick E Duffy
The disease burden of Wuchereria bancrofti and Plasmodium falciparum malaria is high, particularly in Africa, and co-infection is common. However, the effects of filarial infection on the risk of severe malaria are unknown. We used the remaining serum samples from a large cohort study in Muheza, Tanzania to describe vector-borne filarial sero-reactivity among young children and to identify associations between exposure to filarial parasites and subsequent severe malaria infections. We identified positive filarial antibody responses (as well as positive antibody responses to Strongyloides stercoralis) among infants as young as six months...
March 26, 2018: PLoS Neglected Tropical Diseases
Ryan E Wiegand, Gretchen Cooley, Brook Goodhew, Natalie Banniettis, Stephan Kohlhoff, Sarah Gwyn, Diana L Martin
Latent class modeling can be used to combine the results of multiple tests to compare the sensitivity and specificity of those tests in the absence of a gold standard. Seroepidemiology for chlamydia infection may be useful for determining the cumulative risk of infection within a population. Initial studies using the Chlamydia trachomatis immunodominant antigen Pgp3 have shown utility for seroepidemiology of sexually transmitted chlamydia and the eye disease trachoma. We present our latent class modeling results for comparison of antibody data obtained from three different Pgp3-based platforms - multiplex bead array, ELISA, and lateral flow assay...
March 9, 2018: Scientific Reports
Cosme Alvarado-Esquivel, Maria Del Carmen Terrones-Saldivar, Jesus Hernandez-Tinoco, Maria Daniela Enriqueta Munoz-Terrones, Roberto Oswaldo Gallegos-Gonzalez, Luis Francisco Sanchez-Anguiano, Martha Elena Reyes-Robles, Elizabeth Irasema Antuna-Salcido
Background: Infection with cytomegalovirus (CMV) during pregnancy may lead to congenital disease. Very little is known about the seroepidemiology of CMV infection in pregnant women in Mexico. We sought to determine the seroprevalence and correlates of CMV infection in pregnant women in Aguascalientes City, Mexico. Methods: Through a cross-sectional study design, 289 pregnant women were examined for anti-CMV IgG and IgM antibodies in Aguascalientes City, Mexico. A standardized questionnaire was used to obtain the socio-demographic, clinical and behavioral characteristics of the pregnant women...
April 2018: Journal of Clinical Medicine Research
Akira Endo, Keisuke Ejima, Hiroshi Nishiura
PURPOSE: To explore the heterogeneous transmission dynamics for influenza and identify the optimal serum antibody titer cutoff values for estimating its cumulative incidence. METHODS: We constructed a mathematical model describing serologically dependent disease transmission. The diagnostic performances of two serum antibody titer tests (single serum test and paired sera test) were evaluated, and cumulative disease incidence estimators were formulated. The model simulated the 2009 Japanese influenza A/H1N1 epidemic and investigated the optimal cutoff values and cumulative incidence estimates for this epidemic...
May 2018: Annals of Epidemiology
A P Pipia, A Varcasia, G Dessì, R Panzalis, C Gai, F Nonnis, F Veronesi, C Tamponi, A Scala
Pigs are an important reservoir of Toxoplasma gondii, and pork meat is considered one of the main sources of human infection. The present survey assesses the prevalence of T. gondii in organically reared pigs in Sardinia found on the island using various diagnostic methods. Firstly, a seroepidemiological survey was carried out on 63 farms, examining individual blood samples from 414 adult pigs. Secondly, a biomolecular investigation carried out on another 62 farms, examining the brain samples from 107 adult pigs...
May 2018: Parasitology Research
Rahşan Erturk, Ömer Poyraz, Turabi Güneş
Background & objectives: Q fever caused by Coxiella burnetii is a zoonotic infection that spreads to human beings from animals. This study was aimed to demographically examine the C. burnetii seroprevalence in the people living in villages where Crimean-Congo haemorrhagic fever virus (CCHFV) is endemic, in terms of various risk factors such as tick bites, tick contact, and occupational groups. Methods: A total of 440 serum samples from those living in rural areas of Sivas and Tokat regions in Turkey were included in the study as a risk group; 387of them were serologically CCHFV positive (as confirmed in our previous research)...
October 2017: Journal of Vector Borne Diseases
Nataša Beader, Branko Kolarić, Domagoj Slačanac, Irena Tabain, Tatjana Vilibić-Čavlek
BACKGROUND: The Epstein-Barr virus (EBV) is one of the most common viruses found in humans, causing lifelong infection in up to 95% of the world population. OBJECTIVES: To analyze the seroprevalence of EBV infection in different population groups in Croatia. METHODS: During a 2 year period (2015-2016), a total of 2022 consecutive serum samples collected from Croatian residents were tested for the presence of EBV-specific viral capsid antigen (VCA) immunoglobulin M (IgM) and IgG antibodies using an enzyme-linked immunoassay...
February 2018: Israel Medical Association Journal: IMAJ
Cosme Alvarado-Esquivel, Maria Alba Guadalupe Corella-Madueno, Jesus Hernandez-Tinoco, Antonio Rascon-Careaga, Luis Francisco Sanchez-Anguiano, Karla Guadalupe Martinez-Robinson, Maria Lourdes Aldana-Madrid, Trinidad Quizan-Plata, Maria Guadalupe Canez-Carrasco, Cinthia Jhovanna Perez-Martinez
Background: Through a cross-sectional survey, we determined the seroprevalence and correlates of Toxoplasma gondii ( T. gondii ) infection in women of reproductive age in Hermosillo City, Mexico. Methods: We studied 445 women of reproductive age in Hermosillo City in the northwestern Mexican state of Sonora. Women were enrolled in the University of Sonora. Sera of women were examined for IgG and IgM antibodies to T. gondii by commercially available enzyme immunoassays...
March 2018: Journal of Clinical Medicine Research
Qi Zhu, Xiaoping Shao, Shaoli Chen, Dingliang Li, Xiaohong Chen, Wenjin Liu, Xianghua Wu, Zengyong Jian, Rutherford Shannon, Huizhen Zheng
OBJECTIVE: A cross sectional community prevalence survey was conducted to investigate the seroepidemiological features of Hepatitis B virus (HBV) infection among children aged 1-14 years in Guangdong Province, and to provide baseline data for the evaluation of HBV disease burden and the impacts of HBV control. METHODS: 2765 children aged 1-14 years old from 16 villages/streets of 8 cities in Guangdong province were recruited as subjects. A blood sample was obtained from each subject...
February 9, 2018: International Journal of Infectious Diseases: IJID
N Yao, Q Zeng, Q Wang
OBJECTIVES: In order to gain further insight into the seroepidemiology of Bordetella pertussis infection and immunity against diphtheria in Chongqing, China, the concentrations of antibodies to pertussis toxin (PT) and diphtheria toxin (DT) were investigated in a healthy population. STUDY DESIGN: Cross-sectional study. METHODS: In total, 1080 healthy people were recruited into this study. Sera antibodies to DT and PT were measured quantitatively using commercial enzyme-linked immunosorbent assay kits...
March 2018: Public Health
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