نتایج جستجو برای: seroconversion

تعداد نتایج: 4073  

Journal: :The Journal of general virology 2008
Ana Ceballos Guadalupe Andreani Chiara Ripamonti Dario Dilernia Ramiro Mendez Roberto D Rabinovich Patricia Coll Cárdenas Carlos Zala Pedro Cahn Gabriella Scarlatti Liliana Martínez Peralta

Mother-to-child transmission (MTCT) of human immunodeficiency virus type 1 (HIV-1) as described for women with an established infection is, in most cases, associated with the transmission of few maternal variants. This study analysed virus variability in four cases of maternal primary infection occurring during pregnancy and/or breastfeeding. Estimated time of seroconversion was at 4 months of ...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2016
Lucia Brum-Soares Juan-Carlos Cubides Iris Burgos Carlota Monroy Leticia Castillo Selene González Pedro Albajar Viñas Pedro Pablo Palma Urrutia

INTRODUCTION: Geographical, epidemiological, and environmental differences associated with therapeutic response to Chagas etiological treatment have been previously discussed. This study describes high seroconversion rates 72 months after benznidazole treatment in patients under 16 years from a project implemented by Doctors without Borders in Guatemala. METHODS: An enzyme-linked immunosorb...

Journal: :The Journal of infectious diseases 2012
Tai-Chung Tseng Chun-Jen Liu Chi-Ling Chen Chia-Chi Wang Tung-Hung Su Stephanie Fang-Tzu Kuo Pei-Jer Chen Ding-Shinn Chen Jia-Horng Kao

BACKGROUND Hepatitis B e antigen (HBeAg) status and serum hepatitis B virus (HBV) DNA levels are major factors affecting the prognosis of adult HBV carriers; however, the impact of viral load on long-term outcomes after spontaneous HBeAg seroconversion remains unclear. METHODS A total of 390 spontaneous HBeAg seroconverters with a long-term follow-up were enrolled. Serum HBV-DNA levels at 1 y...

2016
Thomas Obinchemti Egbe Rose-Mary Asong Tazinya Gregory Edie Halle-Ekane Eta-Nkongho Egbe Eric Akum Achidi

BACKGROUND We determined the incidence of HIV seroconversion during the second and third trimesters of pregnancy and ad hoc potential cofactors associated with HIV seroconversion after having an HIV-negative result antenatally. We also studied knowledge of PMTCT among pregnant women in seven health facilities in Fako Division, South West Region, Cameroon. METHOD During the period between Sept...

Journal: :AIDS 1997
M Prins I H Hernández Aguado R P Brettle J R Robertson B Broers N Carré D J Goldberg R Zangerle R A Coutinho A van den Hoek

OBJECTIVES To study differences in pre-AIDS mortality between European cohorts of injecting drug users (IDU) and to evaluate whether pre-AIDS mortality increased with time since HIV seroconversion and decreasing CD4 count. METHODS The study population consisted of 664 IDU with documented intervals of HIV seroconversion from eight cohort studies. Differences in pre-AIDS mortality were studied ...

2011
Emanuele Pontali Marcello Feasi Maria Paola Crisalli Giovanni Cassola

Guillain-Barré syndrome (GBS) is an acute or subacute peripheral polyneuropathy characterized by symmetrical muscle weakness. Its occurrence has been reported during acute HIV seroconversion since 1985. Among HIV-infected subjects, GBS has generally a favourable outcome. We report a case of GBS with fatal outcome during HIV seroconversion.

Journal: :Journal of clinical microbiology 2005
Luisa Romanò Claudio Velati Lorella Baruffi Laura Fomiatti Giuseppe Colucci Alessandro R Zanetti

We evaluated the COBAS Ampliscreen hepatitis B virus (HBV) test using standards, seroconversion panels, consecutive donations, and samples from patients with abnormal alanine aminotransferase and chronic hepatitis C. Specificity was 100% and sensitivity was 20 IU/ml. In seroconversion panels, HBV DNA was detected up to 4 to 18 days before HBsAg, suggesting that this assay is useful in shortenin...

2014
Ho-Sheng Wu Ji-Rong Yang Ming-Tsan Liu Chin-Hui Yang Ming-Chu Cheng Feng-Yee Chang

Six persons in Taiwan who had contact with poultry infected with influenza A(H5N2) showed seroconversion for the virus by hemagglutinin inhibition or microneutralization testing. We developed an ELISA based on nonstructural protein 1 of the virus to differentiate natural infection from cross-reactivity after vaccination; 2 persons also showed seroconversion by this test.

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