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Seroepidemiology

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https://www.readbyqxmd.com/read/28335677/comparison-of-anti-pertussis-toxin-elisa-and-agglutination-assays-to-assess-immune-responses-to-pertussis
#1
Pavel Khramtsov, Maria Bochkova, Valeria Timganova, Svetlana Zamorina, Mikhail Rayev
BACKGROUND: The goal of our study was to compare the following two methods of assessment of pertussis post-vaccination immunity: bacterial agglutination test and pertussis toxin enzyme-linked immunosorbent assay (ELISA). METHODS: The study was carried out in Perm Region, Russia. We measured pertussis immunity using two serological methods: ELISA of IgG to pertussis toxin (PT) and the agglutination test (AT) among 135 children, in the age range from 2 months to 17 years old...
March 23, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28335535/enterovirus-71-neutralizing-antibodies-seroepidemiological-research-among-children-in-guangzhou-china-between-2014-and-2015-a-cross-sectional-study
#2
Dingmei Zhang, Yan Chen, Xiashi Chen, Zhenjian He, Xun Zhu, Yuantao Hao
A hand-foot-mouth disease outbreak occurred in 2014 around Guangdong. The purpose of this study was investigating the status and susceptibility of infectious neutralizing antibodies to enterovirus 71 among children so as to provide scientific evidence for the population immunity level of hand-foot-mouth disease and prepare for enterovirus 71 vaccination implementation. Serum specimens were collected from children in communities from January 2014 to March 2015 in Guangzhou. A total of 197 serum samples from children 1-5 years old were collected for this cross-sectional study via non-probabilistic sampling from the database of Chinese National Science and Technique Major Project...
March 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28318771/cross-protection-to-new-drifted-influenza-a-h3-viruses-and-prevalence-of-protective-antibodies-to-seasonal-influenza-during-2014-in-portugal
#3
Raquel Guiomar, Susana Pereira da Silva, Patrícia Conde, Paula Cristóvão, Ana Carina Maia, Pedro Pechirra, Ana Paula Rodrigues, Baltazar Nunes, Luís Milho, Ana Paula Coelho, Aida Fernandes, Paula Caseiro, Fernando Rodrigues, Lurdes Correia, João Pereira-Vaz, Sofia Almeida, Paula Branquinho, Rita Côrte-Real, Regina Viseu, Maria João Peres, Raquel Sanches, Filipa Dantas, Ludovina Freitas, Graça Andrade, Manuel Maurílio, Filomena Caldeira, Rita Cabral Veloso, Luisa Mota-Vieira, Marta Soares, Ana Rita Couto, Jácome Bruges-Armas, Rita Mouro Pinto, Joana Sobrinho Simões, Maria do Rosário Costa, João Tiago Guimarães, Luís Martins, Mário Cunha
INTRODUCTION: Immune profile for influenza viruses is highly changeable over time. Serological studies can assess the prevalence of influenza, estimate the risk of infection, highlight asymptomatic infection rate and can also provide data on vaccine coverage. The aims of the study were to evaluate pre-existing cross-protection against influenza A(H3) drift viruses and to assess influenza immunity in the Portuguese population. MATERIALS AND METHODS: We developed a cross-sectional study based on a convenience sample of 626 sera collected during June 2014, covering all age groups, both gender and all administrative health regions of Portugal...
March 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28316418/seroepidemiology-of-toxoplasma-gondii-infection-in-pregnant-women-in-west-iran-determined-by-elisa-and-pcr-analysis
#4
Gholam Reza Ahmadpour, Behrouz Ezatpour, Ramtin Hadighi, Hormoz Oormazdi, Lame Akhlaghi, Fatemeh Tabatabaei, Mehdi Azami, Mozafar Mohammadi Nejad, Hossein Mahmoudvand
Congenital toxoplasmosis can lead to severe damage for the fetus and newborn. Considering that the seroepidemiology of Toxoplasma infection in the pregnant women is poorly studied in west of Iran, the main objective of this study was to estimate the seroprevalence and potential risk factors for congenital toxoplasmosis in Delfan, Iran. In this cross-sectional study, the serum samples obtained from pregnant women who were referred to health centers for routine monitoring of the pregnancy. Totally, 264 sera were screened for IgG and IgM anti-T...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28302512/seroepidemiology-of-hepatitis-a-hepatitis-b-and-varicella-virus-in-people-living-with-hiv-in-ireland
#5
Corinna Sadlier, Anna O'Rourke, Alison Carr, Colm Bergin
Epidemiological studies investigating seroprevalence of vaccine preventable infections at both individual and population level are important in guiding screening and vaccination practices. Data on seroprevalence of common vaccine preventable infections in HIV-infected individuals is lacking. We carried out a retrospective cohort study to investigate serological immunity and factors associated with immunity to hepatitis A virus (HAV), hepatitis B virus (HBV) and varicalla virus (VZV) in a cohort of HIV-infected individuals attending a large ambulatory HIV specialist centre in Ireland...
March 13, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28288758/epidemiological-patterns-of-bovine-besnoitiosis-in-an-endemic-beef-cattle-herd-reared-under-extensive-conditions
#6
A Esteban-Gil, C Calvete, I Casasús, A Sanz, J Ferrer, M P Peris, J M Marcén-Seral, J A Castillo
Bovine besnoitiosis is a parasitic disease caused by the protozoan Besnoitia besnoiti. Described many decades ago, recent epidemiological studies reveal its important spread within Europe in the last years. To date, many epidemiological aspects related to life cycle, routes of transmission, incidence rates and associated risk factors are lacking; hence, the establishment of appropriate disease control programmes poses an important challenge. Thus, the aim of the present study was to determine the epidemiological pattern of the disease in an endemic herd reared under extensive conditions (Spanish Pyrenees) by identifying main factors associated with infection and clinical disease dynamics...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28286143/detection-of-crimean-congo-hemorrhagic-fever-virus-specific-igg-antibodies-in-ruminants-residing-in-central-and-western-macedonia-greece
#7
Isolde Schuster, Serafeim C Chaintoutis, Chrysostomos I Dovas, Martin H Groschup, Marc Mertens
Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne virus which causes lethal hemorrhagic fever in humans. Although, several reports regarding CCHFV antibody prevalence in humans exist in Greece, information about the current distribution is limited. The aim of the present study is to investigate the prevalence of CCHFV-specific IgG antibodies in cattle and sheep in Macedonia-Greece. The samplings were performed during spring 2013, in 5 regional units of Central Macedonia (Chalkidiki, Imathia, Kilkis, Pella and Thessaloniki) and in the 4 regional units of Western Macedonia (Grevena, Florina, Kastoria and Kozani)...
March 3, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28285512/seroprevalence-of-toxoplasma-gondii-infection-in-wild-boars-wild-rabbits-and-wild-chickens-in-hubei-province-china
#8
Houqiang Luo, Kun Li, Muhammad Shahzad, Hui Zhang, Yanfang Lan, Xiong Xiong
Toxoplasma gondii causes serious infection worldwide in humans and animals. In this study, the seroepidemiology of toxoplasmosis was investigated in wild boars (Sus scrofa) (n=377), wild rabbits (cape hare, Lapus capensis) (n=331), and wild chickens (red junglefwol, Gallus gallus) (n=571) in 4 forested and country sided area of Hubei province of China. For this, blood samples were collected and tested by indirect hemagglutination test (IHA). The seroprevalence was found to be 7.2%, 5.1%, and 12.6% in wild boars, rabbits, and chickens, respectively, with significant differences among these species...
February 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28285497/cytomegalovirus-infection-among-pregnant-women-in-beijing-seroepidemiological-survey-and-intrauterine-transmission
#9
Qing-E Jin, Jian-Rong Su, Shan-Na Wu
Primary cytomegalovirus (CMV) infection during pregnancy can cause congenital defects. Available data for CMV infection during pregnancy in north China is inadequate. The aim of this study was to evaluate the epidemiology of maternal CMV infection and explore the incidence of congenital infection. In this prospective study, serum CMV IgG and IgM antibody were measured in 2887 pregnant women using ELISA, and IgG avidity test was performed on all IgM positive subjects. The seroprevalence of anti-CMV IgG was 94...
March 13, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28283408/development-and-evaluation-of-an-enzyme-linked-immunosorbent-assay-for-the-detection-of-antibodies-to-a-common-urogenital-derivative-of-chlamydia-trachomatis-plasmid-encoded-pgp3
#10
Catherine E Winstanley, Kyle H Ramsey, Peter Marsh, Ian N Clarke
BACKGROUND: Urogenital infection with Chlamydia trachomatis is the most commonly diagnosed sexually transmitted infection in the developed world. Accurate measurement and therefore understanding the seroprevalence of urogenital C. trachomatis infections requires a rigorously optimised and validated ELISA. Previous ELISAs based on the C. trachomatis plasmid-encoded protein, PGP3, have been described but lack standardisation and critical controls or use a less common PGP3 as the capture antigen...
March 7, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28274279/-preliminary-seroepidemiological-survey-of-dengue-infections-in-pakistan-2009-2014
#11
Muhammad Suleman, Hyeong-Woo Lee, Syed Sohail Zahoor Zaidi, Muhammad Masroor Alam, Nadia Nisar, Uzma Bashir Aamir, Salmaan Sharif, Shahzad Shaukat, Adnan Khurshid, Mehar Angez, Massab Umair, Ghulam Mujtaba, Rani Faryal
BACKGROUND: Dengue virus is the causative agent of dengue fever, a vector borne infection which causes self-limiting to life threatening disease in humans. A sero-epidemiological study was conducted to understand the current epidemiology of dengue virus in Pakistan which is now known as a dengue endemic country after its first reported outbreak in 1994. METHODS: To investigate the prevalence of dengue virus in Pakistan during 2009-2014, a total of 9,493 blood samples were screened for the detection of anti-dengue IgM antibodies using ELISA...
March 9, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28241186/distribution-and-quantity-of-sites-of-john-cunningham-virus-persistence-in-immunologically-healthy-patients-correlation-with-john-cunningham-virus-antibody-and-urine-john-cunningham-virus-dna
#12
Joseph R Berger, Craig S Miller, Robert J Danaher, Kathryn Doyle, Kenneth J Simon, Elizabeth Norton, Leonid Gorelik, Ellen Cahir-McFarland, Divya Singhal, Nawaz Hack, Joseph Ryan Owens, Peter T Nelson, Janna H Neltner
Importance: Although seroepidemiological studies indicate that greater than 50% of the population has been infected with John Cunningham virus (JCV), the sites of JCV persistence remain incompletely characterized. Objective: To determine sites of JCV persistence in immunologically healthy individuals. Design, Setting, and Participants: Tissue specimens from multiple sites including brain, renal, and nonrenal tissues were obtained at autopsy performed in the Department of Pathology at the University of Kentucky from 12 immunologically healthy patients between February 9, 2011, and November 27, 2012...
February 27, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28217265/rubella-seromarkers-and-determinants-of-infection-among-tanzanian-children-and-adolescents-in-prevaccination-era-are-we-in-the-right-track
#13
Mariam M Mirambo, Said Aboud, Uwe Groß, Mtebe Majigo, Martha F Mushi, Stephen E Mshana
BACKGROUND: The World health organization advocates assessment of the burden of rubella and congenital rubella syndrome (CRS) by seroepidemiological surveys and surveillance programs in all countries without vaccination programs. Due to scarcity of data in developing countries, this study was conducted to assess the seromakers for natural rubella infection in Tanzania during prevaccination era so as to ascertain the gaps for future research and prevention strategies. METHODS: A cross-sectional study was conducted between September and October 2014...
2017: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28215867/seroepidemiology-and-risk-assessment-of-toxoplasma-gondii-infection-in-captive-wild-birds-and-mammals-in-two-zoos-in-the-north-of-portugal
#14
Ana Tidy, Sara Fangueiro, Jitender P Dubey, Luís Cardoso, Ana Patrícia Lopes
Toxoplasmosis, caused by the protozoan Toxoplasma gondii, is one of the most widespread zoonoses in the world. It can affect most warm-blooded animals but only felids are its definitive hosts. We determined seroprevalence and associated risk factors in birds and mammals kept in two zoological parks in northern Portugal. Sera from 77 birds and 42 mammals were assayed for the presence of T. gondii antibodies by the modified agglutination test (MAT, cut-off titre 20); 34.5% (41/119) were seropositive. All seropositive animals were apparently healthy except one seropostive mandarin (Aix galericulata) which had chorioretinitis...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28168002/hepatitis-c-virus-seroprevalence-in-the-general-female-population-of-9-countries-in-europe-asia-and-africa
#15
Gary M Clifford, Tim Waterboer, Bolormaa Dondog, You Lin Qiao, Dimitri Kordzaia, Doudja Hammouda, Namory Keita, Nahid Khodakarami, Syed Ahsan Raza, Ang Tshering Sherpa, Witold Zatonski, Michael Pawlita, Martyn Plummer, Silvia Franceschi
BACKGROUND: New oral treatments with very high cure rates have the potential to revolutionize global management of hepatitis C virus (HCV), but population-based data on HCV infection are missing in many low and middle-income countries (LMIC). METHODS: Between 2004 and 2009, dried blood spots were collected from age-stratified female population samples of 9 countries: China, Mongolia, Poland, Guinea, Nepal, Pakistan, Algeria, Georgia and Iran. HCV antibodies were detected by a multiplex serology assay using bead-based technology...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28140784/the-prevalence-serogroup-distribution-and-risk-factors-of-meningococcal-carriage-in-adolescents-and-young-adults-in-turkey
#16
Rahmi Tuna Tekin, Ener Cagri Dinleyici, Mehmet Ceyhan, Adem Karbuz, Nuran Salman, Murat Sutçu, Zafer Kurugol, Yasemin Balliel, Melda Celik, Mustafa Hacimustafaoglu, Necdet Kuyucu, Meda Kondolot, Gülnar Sensoy, Ozge Metin, Soner Sertan Kara, Meltem Dinleyici, Omer Kılıç, Cihangul Bayhan, Venhar Gurbuz, Emre Aycan, Aygun Memedova, Arzu Karli, Gulçin Bozlu, Solmaz Celebi
The serogroup epidemiology of invasive meningococcal disease (IMD), which varies considerably by geographic region and immunization schedule, changes continuously. Meningococcal carriage data are crucial for assessing IMD epidemiology and designing f potential vaccination strategies. Meningococcal seroepidemiology in Turkey differs from that in other countries: serogroups W and B are the predominant strains for IMD during childhood, whereas no serogroup C cases were identified over the last 10 years and no adolescent peak for IMD was found...
January 31, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28121669/human-papillomavirus-antibody-response-following-haart-initiation-among-msm
#17
Jean-Damien Combes, Gary M Clifford, Matthias Egger, Matthias Cavassini, Hans H Hirsch, Christoph Hauser, Alexandra Calmy, Patrick Schmid, Enos Bernasconi, Huldrych F Günthard, Silvia Franceschi, Tim Waterboer, Alexandra U Scherrer
OBJECTIVE: To describe effects of HAART on high-risk human papillomavirus (HPV) antibody response in HIV-positive MSM and the meaning of this response for subsequent HPV-related cancer risk. DESIGN: Prospective seroepidemiological study of 281 HIV-positive MSM initiating HAART between 1995 and 2004 in the Swiss HIV Cohort Study. METHODS: For each individual, two serum samples, one at HAART initiation (pre-HAART) and another 24 months later (post-HAART), were tested for L1 antibodies to HPV6, 11, 16, 18, 31, 33, 35, 45, 52 and 58, as well as HPV16-E6 antibodies, using a multiplex serology assay...
February 20, 2017: AIDS
https://www.readbyqxmd.com/read/28121005/seroepidemiology-of-hepatitis-b-and-c-virus-infections-among-blood-donors-in-ethiopia
#18
Gadissa Bedada Hundie, Victor Stalin Raj, Daniel GebreMichael, Bart L Haagmans
This study was conducted to investigate the prevalence of hepatitis B virus (HBV) and hepatitis C virus (HCV) infections among blood donors in different regions in Ethiopia. A total of 56 885 sera were tested for HBsAg and anti-HCV antibodies. Of these, 3.9% were found HBsAg-positive, 0.52% anti-HCV-positive, and 0.054% dual positive. HBV prevalence was relatively higher in Adama (5.91%) than Gondar (4.05%), Jimma (3.87%), Addis Ababa (3.75%), and Tigray (3.7%); and in males (4.64%) than females (2.1%). Overall, HBV and HCV prevalence increased with age...
January 25, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28108298/trichodysplasia-spinulosa-polyomavirus-infection-occurs-during-early-childhood-with-intra-familial-transmission-especially-from-mother-to-child
#19
Vincent Pedergnana, Claire Martel-Jantin, Jérôme Tj Nicol, Valérie Leblond, Patricia Tortevoye, Pierre Coursaget, Antoine Touzé, Laurent Abel, Antoine Gessain
To get new insights into the distribution and modes of acquisition of trichodysplasia spinulosa polyomavirus (TSPyV) infection, we performed a seroepidemiological study in two populations from Cameroon. Our results suggest that TSPyV infection occurs, through close contacts, during early childhood with intra-familial transmission, especially from mother to child.
January 17, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28096863/seroepidemiological-study-of-toxocariasis-in-the-owners-of-domestic-cats-and-dogs-in-mashhad-northeastern-iran
#20
Fariba Berenji, Ali Pouryousef, Abdolmajid Fata, Mahmoud Mahmoudi, Maryam Salehi, Javad Khoshnegah
BACKGROUND: Toxocariasis is the clinical terms applied to infection of human with Ascarid nematodes in the order Ascaridida, named Toxocara canis and T. cati. Because in recent years in Iran many people desire to keep pets (cats and dogs), and lacking of seroepidemiological study of toxocariasis in Mashhad, we decided to determine the seroprevalence of toxocariasis among people who own cats and dogs in comparison with control group. METHODS: A serological study for detection antibodies to Toxocara in two groups (93 cat and dog owners and 93 healthy people as control group) was conducted from Feb 2013 to Dec 2013...
April 2016: Iranian Journal of Parasitology
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