keyword
MENU ▼
Read by QxMD icon Read
search

Hiv incidence assay

keyword
https://www.readbyqxmd.com/read/28231277/comparison-of-cross-sectional-hiv-incidence-assay-results-from-dried-blood-spots-and-plasma
#1
Katherine E Schlusser, Christopher Pilcher, Esper G Kallas, Breno R Santos, Steven G Deeks, Shelley Facente, Sheila M Keating, Michael P Busch, Gary Murphy, Alex Welte, Thomas Quinn, Susan H Eshleman, Oliver Laeyendecker
BACKGROUND: Assays have been developed for cross-sectional HIV incidence estimation using plasma samples. Large scale surveillance programs are planned using dried blood spot (DBS) specimens for incidence assessment. However, limited information exists on the performance of HIV cross-sectional incidence assays using DBS. METHODS: The assays evaluated were: Maxim HIV-1 Limiting Antigen Avidity EIA (LAg-Avidity), Sedia HIV-1 BED-Capture EIA (BED-CEIA), and CDC modified BioRad HIV-1/2 Plus O Avidity-based Assay (CDC-BioRad Avidity) using pre-determined cutoff values...
2017: PloS One
https://www.readbyqxmd.com/read/28222702/the-virological-durability-of-first-line-art-among-hiv-positive-adult-patients-in-resource-limited-settings-without-virological-monitoring-a-retrospective-analysis-of-dart-trial-data
#2
David I Dolling, Ruth L Goodall, Michael Chirara, James Hakim, Peter Nkurunziza, Paula Munderi, David Eram, Dinah Tumukunde, Moira J Spyer, Charles F Gilks, Pontiano Kaleebu, David T Dunn, Deenan Pillay
BACKGROUND: Few low-income countries have virological monitoring widely available. We estimated the virological durability of first-line antiretroviral therapy (ART) after five years of follow-up among adult Ugandan and Zimbabwean patients in the DART study, in which virological assays were conducted retrospectively. METHODS: DART compared clinically driven monitoring with/without routine CD4 measurement. Annual plasma viral load was measured on 1,762 patients. Analytical weights were calculated based on the inverse probability of sampling...
February 21, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28215501/serial-quantiferon-testing-and-tuberculosis-disease-risk-among-young-children-an-observational-cohort-study
#3
Jason R Andrews, Elisa Nemes, Michele Tameris, Bernard S Landry, Hassan Mahomed, J Bruce McClain, Helen A Fletcher, Willem A Hanekom, Robin Wood, Helen McShane, Thomas J Scriba, Mark Hatherill
BACKGROUND: The value of quantitative interferon-γ release assay results for predicting progression from Mycobacterium tuberculosis infection to active disease is unknown. We aimed to investigate the relation between QuantiFERON-TB Gold In-Tube (QFT) conversion interferon-γ values and risk of subsequent active tuberculosis disease and of QFT reversion. METHODS: We analysed data from a reported vaccine efficacy trial of the tuberculosis vaccine MVA85A in South Africa...
February 16, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28193090/estimating-false-recent-classification-for-the-limiting-antigen-avidity-eia-and-bed-capture-enzyme-immunoassay-in-vietnam-implications-for-hiv-1-incidence-estimates
#4
Neha S Shah, Yen T Duong, Linh-Vi Le, Nguyen Anh Tuan, Bharat Parekh, Hoang Thi Thanh Ha, Quang Duy Pham, Cao Thi Thu Cuc, Trudy Dobbs, Tran Hong Tram, Truong Tx Lien, Nick Wagar, Chunfu Yang, Amy Martin, Mitchell I Wolfe, Hien Tran Nguyen, Andrea A Kim
BACKGROUND: Laboratory tests that can distinguish recent from long-term HIV infection are used to estimate HIV incidence in a population but can potentially misclassify a proportion of long-term HIV infections as recent. Correct application of an assay requires determination of the proportion false recents (PFR) as part of the assay characterization and for calculating HIV incidence in a local population using a HIV incidence assay. METHODS: From April 2009 to December 2010, blood specimens were collected from HIV-infected individuals attending 9 outpatient clinics (OPCs) in Vietnam (4 from northern and 5 from southern Vietnam)...
February 14, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28185617/mycobacterium-kansasii
#5
James C Johnston, Leslie Chiang, Kevin Elwood
The incidence of Mycobacterium kansasii varies widely over time and by region, but this organism remains one of the most clinically relevant isolated species of nontuberculous mycobacteria. In contrast to other common nontuberculous mycobacteria, M. kansasii is infrequently isolated from natural water sources or soil. The major reservoir appears to be tap water. Infection is likely acquired through the aerosol route, with low infectivity in regions of endemicity. Human-to-human transmission is thought not to occur...
January 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28159730/hiv-trends-in-the-united-states-diagnoses-and-estimated-incidence
#6
H Irene Hall, Ruiguang Song, Tian Tang, Qian An, Joseph Prejean, Patricia Dietz, Angela L Hernandez, Timothy Green, Norma Harris, Eugene McCray, Jonathan Mermin
BACKGROUND: The best indicator of the impact of human immunodeficiency virus (HIV) prevention programs is the incidence of infection; however, HIV is a chronic infection and HIV diagnoses may include infections that occurred years before diagnosis. Alternative methods to estimate incidence use diagnoses, stage of disease, and laboratory assays of infection recency. Using a consistent, accurate method would allow for timely interpretation of HIV trends. OBJECTIVE: The objective of our study was to assess the recent progress toward reducing HIV infections in the United States overall and among selected population segments with available incidence estimation methods...
February 3, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28152432/rates-and-determinants-of-incidence-and-clearance-of-cervical-hpv-genotypes-among-hiv-seropositive-women-in-pune-india
#7
Arati Mane, Vikrant V Sahasrabuddhe, Amit Nirmalkar, Arun R Risbud, Seema Sahay, Ramesh A Bhosale, Sten H Vermund, Sanjay M Mehendale
BACKGROUND: Several studies in recent years have documented the genotype-specific prevalence of HPV infection and wide diversity and multiplicity of HPV genotypes among HIV-seropositive women. Yet, information on changes in HPV genotype-specific incidence and clearance rates over time, and their correlation with clinical or immunologic factors among HIV-seropositive women is scarce. OBJECTIVES: We conducted a prospective study to investigate the incidence and clearance rates of cervical HPV genotypes among HIV-seropositive women in India and expand the evidence base in this area of research...
March 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28141782/effect-of-pregnancy-on-interferon-gamma-release-assay-and-tuberculin-skin-test-detection-of-latent-tb-infection-among-hiv-infected-women-in-a-high-burden-setting
#8
Sylvia M LaCourse, Lisa M Cranmer, Daniel Matemo, John Kinuthia, Barbra A Richardson, David J Horne, Grace John-Stewart
BACKGROUND: Peripartum immunologic changes may affect latent TB infection (LTBI) diagnostic performance among HIV-infected women. METHODS: HIV-infected women were serially-tested with tuberculin skin test (TST) and interferon gamma release assay (IGRA) (QuantiFERON® TB Gold In-tube [QFT]) in pregnancy and weeks postpartum in Kenya. Prevalence, sensitivity and agreement, and correlates of QFT/TST positivity were assessed. Quantitative QFT mitogen and M. tuberculosis antigen (Mtb-Ag) responses were compared by peripartum stage...
January 30, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28126023/dynamic-changes-in-biomarkers-in-acute-human-immunodeficiency-virus-infections-a-case-report
#9
Wei-Ming Gu, Yi Hu, Wei-Zhong Hu, Biao Xu
BACKGROUND: The highest incidence of human immunodeficiency virus infection in China is among men who have sex with men. This case report aims to describe the dynamic changes in biomarkers in an acute human immunodeficiency virus infection of a Han Chinese man who has sex with men, and to illustrate the possibility of using these biomarkers for the early detection of human immunodeficiency virus infection in Chinese hospital settings. CASE PRESENTATION: The 25-year-old Han Chinese male patient presented himself with an 8-day history of symptoms and signs of upper respiratory viral infections to a sexually transmitted infection clinic of a hospital setting in Shanghai...
January 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28126016/seroprevalence-of-toxoplasma-gondii-and-associated-risk-factors-among-hiv-infected-women-within-reproductive-age-group-at-mizan-aman-general-hospital-southwest-ethiopia-a-cross-sectional-study
#10
Ayalew Jejaw Zeleke, Yayehirad Alemu Melsew
BACKGROUND: Toxoplasmosis is serious in the case of immune suppression and prenatal transmission. In immunocompromised hosts, it is manifested primarily as a life-threatening condition, toxoplasmic encephalitis. Congenital toxoplasmosis results in abortion or congenitally acquired disorders which primarily affect the central nervous system. This study assessed seroprevalence of Toxoplasma gondii (T. gondii) infection and associated factors among HIV-infected women within the reproductive age group (18-49 years) at Mizan Aman General Hospital, Southwest Ethiopia...
January 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28121669/human-papillomavirus-antibody-response-following-haart-initiation-among-msm
#11
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/28061822/cardiovascular-risk-and-endothelial-function-in-people-living-with-hiv-aids-design-of-the-multi-site-longitudinal-endoafrica-study-in-the-western-cape-province-of-south-africa
#12
Hans Strijdom, Patrick De Boever, Gerhard Walzl, M Faadiel Essop, Tim S Nawrot, Ingrid Webster, Corli Westcott, Nyiko Mashele, Frans Everson, Stephanus T Malherbe, Kim Stanley, Harald H Kessler, Evelyn Stelzl, Nandu Goswami
BACKGROUND: There is growing evidence of an interaction between HIV-infection, anti-retroviral therapy (ART) and cardiovascular diseases (CVD). Epidemiological studies in Europe and North America have been observing a shift towards an increased incidence of coronary heart disease and acute myocardial infarctions in HIV-infected populations compared to the general population even after adjusting for traditional cardiovascular risk factors. Despite South Africa (and sub-Saharan Africa, SSA) being regarded as the epicentre of the global HIV epidemic, very little is known about the prevalence of cardiovascular risk factors and precursors of vascular disease in HIV-infected populations in this region...
January 7, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28059955/diagnosis-of-opportunistic-infections-hiv-co-infections-tuberculosis
#13
Lesley Scott, Pedro da Silva, Catharina C Boehme, Wendy Stevens, Christopher M Gilpin
PURPOSE OF REVIEW: Tuberculosis (TB) incidence has declined ∼1.5% annually since 2000, but continued to affect 10.4 million individuals in 2015, with 1/3 remaining undiagnosed or underreported. The diagnosis of TB among those co-infected with HIV is challenging as TB remains the leading cause of death in such individuals. Accurate and rapid diagnosis of active TB will avert mortality in both adults and children, reduce transmission, and assist in timeous decisions for antiretroviral therapy initiation...
March 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/28019101/subtypes-and-risk-behaviors-among-incident-hiv-cases-in-the-bangkok-men-who-have-sex-with-men-cohort-study-thailand-2006-2014
#14
Caitlin R Lam, Timothy H Holtz, Wanna Leelawiwat, Philip A Mock, Wannee Chonwattana, Wipas Wimonsate, Anchalee Varangrat, Warunee Thienkrua, Charles Rose, Anupong Chitwarakorn, Marcel E Curlin
HIV-1 incidence and prevalence remain high among men who have sex with men (MSM), and transgender women (TGW), in Thailand. To examine the link between epidemiologic factors and HIV-1 subtype transmission among Thai MSM, we compared covariates of infection with HIV CRF01_AE and other HIV strains among participants in the Bangkok MSM Cohort Study (BMCS). The BMCS was an observational cohort study of Thai MSM and TGW with up to 60 months of follow-up at 4 monthly intervals. Participants underwent HIV/sexually transmitted infections testing and provided behavioral data at each visit...
January 27, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28004622/moving-towards-a-reliable-hiv-incidence-test-current-status-resources-available-future-directions-and-challenges-ahead
#15
G Murphy, C D Pilcher, S M Keating, R Kassanjee, S N Facente, A Welte, E Grebe, K Marson, M P Busch, P Dailey, N Parkin, J Osborn, S Ongarello, K Marsh, J M Garcia-Calleja
In 2011 the Incidence Assay Critical Path Working Group reviewed the current state of HIV incidence assays and helped to determine a critical path to the introduction of an HIV incidence assay. At that time the Consortium for Evaluation and Performance of HIV Incidence Assays (CEPHIA) was formed to spur progress and raise standards among assay developers, scientists and laboratories involved in HIV incidence measurement and to structure and conduct a direct independent comparative evaluation of the performance of 10 existing HIV incidence assays, to be considered singly and in combinations as recent infection test algorithms...
December 22, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27997597/immunogenicity-and-protective-efficacy-of-the-dar-901-booster-vaccine-in-a-murine-model-of-tuberculosis
#16
Timothy Lahey, Dominick Laddy, Krystal Hill, Jacqueline Schaeffer, Alison Hogg, James Keeble, Belinda Dagg, Mei Mei Ho, Robert D Arbeit, C Fordham von Reyn
BACKGROUND: The development of a novel tuberculosis vaccine is a leading global health priority. SRL172, an inactivated, whole-cell mycobacterial vaccine, was safe, immunogenic and reduced the incidence of culture-confirmed tuberculosis in a phase III trial in HIV-infected and BCG immunized adults in Tanzania. Here we describe the immunogenicity and protective efficacy of DAR-901, a booster vaccine against tuberculosis manufactured from the same seed strain using a new scalable method...
2016: PloS One
https://www.readbyqxmd.com/read/27974398/safety-and-immunogenicity-of-the-recombinant-mycobacterium-bovis-bcg-vaccine-vpm1002-in-hiv-unexposed-newborn-infants-in-south-africa
#17
André G Loxton, Julia K Knaul, Leander Grode, Andrea Gutschmidt, Christiane Meller, Bernd Eisele, Hilary Johnstone, Gian van der Spuy, Jeroen Maertzdorf, Stefan H E Kaufmann, Anneke C Hesseling, Gerhard Walzl, Mark F Cotton
Tuberculosis is a global threat to which infants are especially vulnerable. Effective vaccines are required to protect infants from this devastating disease. VPM1002, a novel recombinant Mycobacterium bovis bacillus Calmette-Guérin (BCG) vaccine previously shown to be safe and immunogenic in adults, was evaluated for safety in its intended target population, namely, newborn infants in a region with high prevalence of tuberculosis. A total of 48 newborns were vaccinated intradermally with VPM1002 (n = 36) or BCG Danish strain (n = 12) in a phase II open-labeled, randomized trial with a 6-month follow-up period...
February 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/27942608/formulation-development-and-optimization-of-lamivudine-300-mg-and-tenofovir-disoproxil-fumarate-tdf-300-mg-fdc-tablets-by-d-optimal-mixture-design
#18
Prosper Tibalinda, Joseph Sempombe, Raphael Shedafa, Nelson Masota, Dickson Pius, Mary Temu, Eliangiringa Kaale
The usage of fixed dose combination (FDC) tablets of Lamivudine and Tenofovir Disoproxil Fumarate (TDF) is increasing due to increased incidences of HIV/Hepatitis B and HIV/TB co-infections. This is likely to increase the financial crisis due to limited resources for funding procurement of ready-made products from the pharmaceuticals manufacturing leading countries. Therefore, production of local oral tablets containing Lamivudine and TDF FDC is inevitable. Lamivudine 300 mg/TDF 300 mg tablets were developed and optimized by D-optimal mixture design and produced by direct compression technique...
December 2016: Heliyon
https://www.readbyqxmd.com/read/27872321/msm-in-bogot%C3%A3-are-living-with-hiv-for-extended-periods-without-diagnosis-or-treatment
#19
Maria Cecilia Zea, Patricia Olaya, Carol A Reisen, Paul J Poppen
We examined recency of infection in serum samples obtained from 69 newly identified HIV-positive cases in a sample of 1000 men who have sex with men (MSM) in Bogotá. HIV antibody avidity assays were performed using the Architect HIV Ag/AB combo. Avidity indices ranged from 0.62 to 1.22, with a cut-off score below 0.80 indicative of recent infection. Two samples were classified as recent, six fell within the gray zone (0.75 to 0.85), and the remaining 61 were considered established infections. Results provided evidence of widespread, long-term, undiagnosed HIV infection, as well as an estimate of one-year incidence at ...
November 21, 2016: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/27828875/antiretroviral-drug-use-in-a-cross-sectional-population-survey-in-africa-nimh-project-accept-hptn-043
#20
Jessica M Fogel, William Clarke, Michal Kulich, Estelle Piwowar-Manning, Autumn Breaud, Matthew T Olson, Mark A Marzinke, Oliver Laeyendecker, Agnès Fiamma, Deborah Donnell, Jessie K K Mbwambo, Linda Richter, Glenda Gray, Michael Sweat, Thomas J Coates, Susan H Eshleman
BACKGROUND: Antiretroviral (ARV) drug treatment benefits the treated individual and can prevent HIV transmission. We assessed ARV drug use in a community-randomized trial that evaluated the impact of behavioral interventions on HIV incidence. METHODS: Samples were collected in a cross-sectional survey after a 3-year intervention period. ARV drug testing was performed using samples from HIV-infected adults at 4 study sites (Zimbabwe; Tanzania; KwaZulu-Natal and Soweto, South Africa; survey period 2009-2011) using an assay that detects 20 ARV drugs (6 nucleoside/nucleotide reverse transcriptase inhibitors, 3 nonnucleoside reverse transcriptase inhibitors, and 9 protease inhibitors; maraviroc; raltegravir)...
February 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
keyword
keyword
39529
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"