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seroprevalence and dengue

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https://www.readbyqxmd.com/read/28333935/dengue-seroprevalence-seroconversion-and-risk-factors-in-dhaka-bangladesh
#1
Parnali Dhar-Chowdhury, Kishor Kumar Paul, C Emdad Haque, Shakhawat Hossain, L Robbin Lindsay, Antonia Dibernardo, W Abdullah Brooks, Michael A Drebot
BACKGROUND: Dengue virus (DENV) activity has been reported in Dhaka, Bangladesh since the early 1960s with the greatest burden of dengue fever and dengue hemorrhagic fever cases observed in 2000. Since this time, the intensity of dengue activity has varied from year to year, and its determining factors remained relatively unknown. In light of such gaps in knowledge, the main objectives of this study were to determine the magnitude of seroprevalence and seroconversion among the surveyed population, and establish the individual/household level risk factors for the presence of DENV antibodies among all age groups of target populations in the city of Dhaka...
March 23, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28289727/seroprevalence-of-zika-virus-in-wild-african-green-monkeys-and-baboons
#2
Connor R Buechler, Adam L Bailey, Andrea M Weiler, Gabrielle L Barry, Meghan E Breitbach, Laurel M Stewart, Anna J Jasinska, Nelson B Freimer, Cristian Apetrei, Jane E Phillips-Conroy, Clifford J Jolly, Jeffrey Rogers, Thomas C Friedrich, David H O'Connor
Zika virus (ZIKV) has recently spread through the Americas and has been associated with a range of health effects, including birth defects in children born to women infected during pregnancy. Although the natural reservoir of ZIKV remains poorly defined, the virus was first identified in a captive "sentinel" macaque monkey in Africa in 1947. However, the virus has not been reported in humans or nonhuman primates (NHPs) in Africa outside Gabon in over a decade. Here, we examine ZIKV infection in 239 wild baboons and African green monkeys from South Africa, the Gambia, Tanzania, and Zambia using combinations of unbiased deep sequencing, quantitative reverse transcription-PCR (qRT-PCR), and an antibody capture assay that we optimized using serum collected from captive macaque monkeys exposed to ZIKV, dengue virus, and yellow fever virus...
March 2017: MSphere
https://www.readbyqxmd.com/read/28284914/dengue-virus-serologic-prevalence-and-seroconversion-rates-in-children-and-adults-in-medellin-colombia-implications-for-vaccine-introduction
#3
Mabel Carabali, Jacqueline Kyungah Lim, Diana Carolina Velez, Andrea Trujillo, Jorge Egurrola, Kang Sung Lee, Jay S Kaufman, Luiz Jacinto DaSilva, Ivan Dario Velez, Jorge E Osorio
BACKGROUND: Dengue is an important public health problem worldwide. Recently a vaccine has been licensed in some countries of Latin America and Asia. Recommendations for dengue vaccine introduction include endemicity and high serologic prevalence of dengue in the territories considering its introduction. METHODS: We conducted a community-based survey to estimate dengue seroprevalence and age-specific seroconversion rates in a community in Medellin, Colombia, using dengue serologic test (IgG Indirect ELISA)...
March 8, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28208856/seroprevalence-of-common-viral-diseases-a-hospital-based-study-from-amritsar-india
#4
Kanwardeep Singh, Shailpreet K Sidhu, Pushpa Devi, Manpreet Kaur, Maninder Kaur, Nachhatarjit Singh
INTRODUCTION: There is a paucity of published data on epidemiology of the viral infections in Punjab, India. The Viral Research and Diagnostic Laboratory (VRDL) located at Government Medical College (GMC), Amritsar conducts the initial diagnosis of common viruses circulating in the region. AIM: To report the seroprevalence of various viral diseases in Amritsar and neighboring districts of Punjab along with the demographic and geographical data of the patients. MATERIALS AND METHODS: Whole blood sera samples from a total of 5781 patients suspected of various viral diseases (chikungunya, dengue, hepatitis A, hepatitis B, hepatitis C, hepatitis E, herpes simplex-1 or herpes simplex-2) were received at VRDL, GMC, Amritsar from January 2015 to April 2016 and a cross sectional study was conducted...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28198544/dengue-virus-and-malaria-concurrent-infection-among-febrile-subjects-within-ilorin-metropolis-nigeria
#5
Olatunji Matthew Kolawole, Adebimpe Adetola Seriki, Ahmad Adebayo Irekeola, Kizito Eneye Bello, Oluwapelumi Olufemi Adeyemi
Dengue is a mosquito-borne disease of public health importance. It is caused by four serotypes of Dengue virus (i.e. DENV-1, -2, -3 and -4). As a result of practices that are conducive for mosquito breading, its vector is widespread in Nigeria and this could result to possible DENV outbreaks in Nigeria and beyond. This study aimed to assess the recency of DENV infection as well as occurrence of DENV and Malaria co-infections within Ilorin, Nigeria. Blood samples were obtained from 176 febrile subjects and analyzed using Enzyme Linked Immunosorbent Assay (ELISA) for the presence of DENV antibodies...
February 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28114342/spatial-analysis-of-dengue-seroprevalence-and-modeling-of-transmission-risk-factors-in-a-dengue-hyperendemic-city-of-venezuela
#6
Maria F Vincenti-Gonzalez, María-Eugenia Grillet, Zoraida I Velasco-Salas, Erley F Lizarazo, Manuel A Amarista, Gloria M Sierra, Guillermo Comach, Adriana Tami
BACKGROUND: Dengue virus (DENV) transmission is spatially heterogeneous. Hence, to stratify dengue prevalence in space may be an efficacious strategy to target surveillance and control efforts in a cost-effective manner particularly in Venezuela where dengue is hyperendemic and public health resources are scarce. Here, we determine hot spots of dengue seroprevalence and the risk factors associated with these clusters using local spatial statistics and a regression modeling approach. METHODOLOGY/PRINCIPAL FINDINGS: From August 2010 to January 2011, a community-based cross-sectional study of 2012 individuals in 840 households was performed in high incidence neighborhoods of a dengue hyperendemic city in Venezuela...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27973402/the-influence-of-urbanization-modes-on-the-spatial-circulation-of-flaviviruses-within-ouagadougou-burkina-faso
#7
Florence Fournet, Stéphane Rican, Zoé Vaillant, Anna Roudot, Aude Meunier-Nikiema, Daouda Kassié, Roch K Dabiré, Gérard Salem
Dengue is an emerging infectious disease of global significance. Although this virus has been reported for a long time, its significance within the burden of diseases in West Africa is not obvious, especially in Burkina Faso. Our objective was to evaluate flavivirus presence in Ouagadougou (Burkina Faso) and the link between anti-flavivirus antibody seroprevalence and urbanization modes. A population-based cross-sectional survey was conducted and 3015 children were enrolled from Ouagadougou districts with different types and degrees of urbanization (with/without equipment and high/low building density)...
December 10, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27926925/dengue-in-the-middle-east-and-north-africa-a-systematic-review
#8
John M Humphrey, Natalie B Cleton, Chantal B E M Reusken, Marshall J Glesby, Marion P G Koopmans, Laith J Abu-Raddad
BACKGROUND: Dengue virus (DENV) infection is widespread and its disease burden has increased in past decades. However, little is known about the epidemiology of dengue in the Middle East and North Africa (MENA). METHODOLOGY / PRINCIPAL FINDINGS: Following Cochrane Collaboration guidelines and reporting our findings following PRISMA guidelines, we systematically reviewed available records across MENA describing dengue occurrence in humans (prevalence studies, incidence studies, and outbreak reports), occurrence of suitable vectors (Aedes aegypti and Aedes albopictus), and DENV vector infection rates...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27898668/the-long-term-safety-public-health-impact-and-cost-effectiveness-of-routine-vaccination-with-a-recombinant-live-attenuated-dengue-vaccine-dengvaxia-a-model-comparison-study
#9
Stefan Flasche, Mark Jit, Isabel Rodríguez-Barraquer, Laurent Coudeville, Mario Recker, Katia Koelle, George Milne, Thomas J Hladish, T Alex Perkins, Derek A T Cummings, Ilaria Dorigatti, Daniel J Laydon, Guido España, Joel Kelso, Ira Longini, Jose Lourenco, Carl A B Pearson, Robert C Reiner, Luis Mier-Y-Terán-Romero, Kirsten Vannice, Neil Ferguson
BACKGROUND: Large Phase III trials across Asia and Latin America have recently demonstrated the efficacy of a recombinant, live-attenuated dengue vaccine (Dengvaxia) over the first 25 mo following vaccination. Subsequent data collected in the longer-term follow-up phase, however, have raised concerns about a potential increase in hospitalization risk of subsequent dengue infections, in particular among young, dengue-naïve vaccinees. We here report predictions from eight independent modelling groups on the long-term safety, public health impact, and cost-effectiveness of routine vaccination with Dengvaxia in a range of transmission settings, as characterised by seroprevalence levels among 9-y-olds (SP9)...
November 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27891337/high-seroprevalence-of-dengue-virus-infection-in-blood-donors-from-delhi-a-single-centre-study
#10
Pragya Ranjan, Vidhya Natarajan, Meenu Bajpai, Ekta Gupta
INTRODUCTION: The risk of transfusion transmitted dengue has been increasingly recognized. Blood donors in an endemic area like Delhi may serve as a potential vehicle for transmission of the infection. Moreover, prevalence of infection in them would be representative of the true picture of dengue in a population. AIM: To determine the prevalence of dengue virus infection in blood donors in a tertiary care centre. MATERIALS AND METHODS: A total of 200 blood donors were recruited in the study after obtaining informed consent in the Institute of Liver and Biliary Sciences, New Delhi in July and August 2012...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27887591/a-prospective-cohort-study-to-assess-seroprevalence-incidence-knowledge-attitudes-and-practices-willingness-to-pay-for-vaccine-and-related-risk-factors-in-dengue-in-a-high-incidence-setting
#11
Ruth Aralí Martínez-Vega, Alfonso J Rodriguez-Morales, Yalil Tomás Bracho-Churio, Mirley Enith Castro-Salas, Fredy Galvis-Ovallos, Ronald Giovanny Díaz-Quijano, María Lucrecia Luna-González, Jaime E Castellanos, José Ramos-Castañeda, Fredi Alexander Diaz-Quijano
BACKGROUND: Dengue is one of the most important vector-borne diseases in the world, causing significant morbidity and economic impact. In Colombia, dengue is a major public health problem. Departments of La Guajira, Cesar and Magdalena are dengue endemic areas. The objective of this research is to determine the seroprevalence and the incidence of dengue virus infection in the participating municipalities from these Departments, and also establish the association between individual and housing factors and vector indices with seroprevalence and incidence...
November 25, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27879463/a-tale-of-two-flaviviruses-a-seroepidemiological-study-of-dengue-virus-and-west-nile-virus-transmission-in-the-ouest-and-sud-est-departments-of-haiti
#12
Thomas A Weppelmann, Alexandra Burne, Michael E von Fricken, Maha A Elbadry, Madsen Beau De Rochars, Jacques Boncy, Bernard A Okech
Though plans to eliminate malaria from the island of Hispaniola have recently received much attention, arbovirus surveillance continues to be largely neglected in Haiti. To support surveillance efforts and encourage vector-control strategies, a cross-sectional study of dengue virus (DENV) and West Nile virus (WNV) transmission was conducted using standard seroepidemiological methods. Blood samples (N = 673) were collected from 278 males and 395 females from three locations in the Ouest and Sud-Est Departments of Haiti...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27825949/dengue-serotype-specific-seroprevalence-among-5-to-10-year-old-children-in-india-a-community-based-cross-sectional-study
#13
Suneela Garg, Anita Chakravarti, Ritesh Singh, N R Ramesh Masthi, Ram Chandra Goyal, Guru Rajesh Jammy, Enakshi Ganguly, Nandini Sharma, M M Singh, Germano Ferreira, Annick Moureau, Sujeet Ojha, Joshua Nealon
BACKGROUND: Dengue surveillance data in India are limited and probably substantially underestimate the burden of disease. A community-based study was undertaken to assess the prevalence of dengue-specific immunoglobulin G (IgG) antibodies in children across India and to examine historical dengue exposure rates. Potential associations between socio-economic factors and dengue seroprevalence were also assessed (registered at ctri.nic.in: CTRI/2011/12/002243). METHODS: A convenience sample of 2609 healthy children aged 5-10 years was enrolled; these children were registered at or were living in the vicinity of eight centres located at six geographically distinct sites across India...
January 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27821884/measuring-haitian-children-s-exposure-to-chikungunya-dengue-and-malaria
#14
Mathieu Jp Poirier, Delynn M Moss, Karla R Feeser, Thomas G Streit, Gwong-Jen J Chang, Matthew Whitney, Brandy J Russell, Barbara W Johnson, Alison J Basile, Christin H Goodman, Amanda K Barry, Patrick J Lammie
OBJECTIVE: To differentiate exposure to the newly introduced chikungunya virus from exposure to endemic dengue virus and other pathogens in Haiti. METHODS: We used a multiplex bead assay to detect immunoglobulin G (IgG) responses to a recombinant chikungunya virus antigen, two dengue virus-like particles and three recombinant Plasmodium falciparum antigens. Most (217) of the blood samples investigated were collected longitudinally, from each of 61 children, between 2011 and 2014 but another 127 were collected from a cross-sectional sample of children in 2014...
November 1, 2016: Bulletin of the World Health Organization
https://www.readbyqxmd.com/read/27792777/unsuspected-dengue-as-a-cause-of-acute-febrile-illness-in-children-and-adults-in-western-nicaragua
#15
Megan E Reller, Aravinda M de Silva, Jeremy J Miles, Ramesh S Jadi, Anne Broadwater, Katie Walker, Christopher Woods, Orlando Mayorga, Armando Matute
BACKGROUND: Dengue is an emerging infectious disease of global significance. Suspected dengue, especially in children in Nicaragua's heavily-urbanized capital of Managua, has been well documented, but unsuspected dengue among children and adults with undifferentitated fever has not. METHODOLOGY/PRINCIPAL FINDINGS: To prospectively study dengue in semi-urban and rural western Nicaragua, we obtained epidemiologic and clinical data as well as acute and convalescent sera (2 to 4 weeks after onset of illness) from a convenience sample (enrollment Monday to Saturday daytime to early evening) of consecutively enrolled patients (n = 740) aged ≥ 1 years presenting with acute febrile illness...
October 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27731556/dengue-and-chikungunya-virus-co-infections-the-inside-story
#16
Vikram Londhey, Sachee Agrawal, Nilima Vaidya, Seema Kini, J S Shastri, Sujatha Sunil
INTRODUCTION: There have been various studies from India describing the acute presentation and the long-term sequalae of Chikungunya (CHIKV) infection. However, there are very few studies discussing the Chikungunya-Dengue (DENV) co-infection from Western India. The present project was undertaken to study the clinical features of Dengue and Chikungunya co-infection and compare with Chikungunya mono-infection; correlate the clinical findings with seroprevalence and molecular identification of Dengue and Chikungunya using IgM ELISA and RTPCR...
March 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27538986/rural-urban-comparisons-of-dengue-seroprevalence-in-malaysia
#17
Cheng Hoon Chew, Yuan Liang Woon, Faridah Amin, Tassha H Adnan, Asmah Hani Abdul Wahab, Zul Edzhar Ahmad, Mohd Adam Bujang, Abdul Muneer Abdul Hamid, Rahman Jamal, Wei Seng Chen, Chee Peng Hor, Lena Yeap, Ling Ping Hoo, Pik Pin Goh, Teck Onn Lim
BACKGROUND: Each year an estimated 390 million dengue infections occur worldwide. In Malaysia, dengue is a growing public health concern but estimate of its disease burden remains uncertain. We compared the urban-rural difference of dengue seroprevalence and determined age-specific dengue seroprevalence in Malaysia. METHODS: We undertook analysis on 11,821 subjects from six seroprevalence surveys conducted in Malaysia between 2001 and 2013, which composed of five urban and two rural series...
2016: BMC Public Health
https://www.readbyqxmd.com/read/27399793/estimating-dengue-transmission-intensity-from-case-notification-data-from-multiple-countries
#18
Natsuko Imai, Ilaria Dorigatti, Simon Cauchemez, Neil M Ferguson
BACKGROUND: Despite being the most widely distributed mosquito-borne viral infection, estimates of dengue transmission intensity and associated burden remain ambiguous. With advances in the development of novel control measures, obtaining robust estimates of average dengue transmission intensity is key for assessing the burden of disease and the likely impact of interventions. METHODOLOGY/PRINCIPLE FINDINGS: We estimated the force of infection (λ) and corresponding basic reproduction numbers (R0) by fitting catalytic models to age-stratified incidence data identified from the literature...
July 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27365916/chikungunya-fever-among-patients-with-acute-febrile-illness-attending-a-tertiary-care-hospital-in-mumbai
#19
Lata Baswanna Galate, Sachee R Agrawal, Jayanthi S Shastri, Vikram Londhey
BACKGROUND: Chikungunya fever (CHIK) is an arboviral disease. Dengue fever (DENG) and CHIK are indistinguishable clinically and need to be differentiated by laboratory investigations. PURPOSE: This study aimed at estimating the seroprevalence of CHIK mono-infection and CHIK and DENG dual infection in suspected patients. We also analyzed the age, sex distribution, joint involvement, and relation of joint movement restriction with visual analog scale (VAS). MATERIALS AND METHODS: Two hundred patients clinically suspected with DENG and CHIK were enrolled from a Tertiary Care Hospital in Mumbai from April 2012 to October 2013...
July 2016: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/27249897/seroepidemiology-of-dengue-virus-infection-in-hiv-infected-children-in-comparison-to-healthy-children
#20
Usa Thisyakorn, Kanyalak Srettakraikul, Marisa Hemungkorn, Chule Thisyakorn
BACKGROUND: Dengue infection is the most common arboviral infection in the world while the HIV/AIDS epidemic remains a global concern. The pathogenesis of both diseases is rather on the contrary and it is generally observed that dengue diseases are uncommon in children with AIDS. OBJECTIVE: To study the seroprevalence of dengue virus infection in HIV-infected children compared to healthy children. MATERIAL AND METHOD: A cross-sectional seroprevalence of dengue virus was conducted at King Chulalongkorn Memorial Hospital, Bangkok, Thailand...
February 2016: Journal of the Medical Association of Thailand, Chotmaihet Thangphaet
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