Archives of virology
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Archives of virology · Apr 2015
Hepatitis B virus and hepatitis C virus infection among HIV-1-infected injection drug users in Dali, China: prevalence and infection status in a cross-sectional study.
To assess the prevalence of hepatitis B virus (HBV) and hepatitis C virus (HCV) infection and to investigate their mutual influences on infection status among human immunodeficiency virus type 1 (HIV-1)-seropositive injection drug users (IDUs). A cross-sectional study was conducted among HIV infected IDUs in Dali, China. The participants were tested for serological markers of HBV and HCV infection, alanine transaminase (ALT) activity and CD4(+) T cell count. ⋯ HCV clearance was associated with HBV antigenemia (p = 0.0002) and higher CD4(+) T cell count (p = 0.0294). Resolved HBV infection was associated with HCV genotype 3 (p = 0.0365). HBV and HCV infection are highly prevalent and mutually influence infection status in HIV-1 infected IDUs in Dali, China.
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Archives of virology · Mar 2015
Epidemical features of HAdV-3 and HAdV-7 in pediatric pneumonia in Chongqing, China.
Human adenoviruses (HAdV) of species B, C, and E (HAdV-B, -C, -E) are frequent causative agents of acute respiratory infections worldwide. No specific analysis has been done on the epidemiological and clinical features of HAdV in pediatric pneumonia in China. Nasopharyngeal aspirates were collected from hospitalized children with pneumonia from June 2009 to May 2014. ⋯ Temporal patterns showed that, except for a simultaneous outbreak of HAdV-3 and HAdV-7 during the years 2010-2011, HAdV-7 and HAdV-3 were alternately predominant, and the dominance shifted to HAdV-3 after 2014. Identification of the predominant HAdV genotypes and their epidemical features is useful for determining preventive strategies. HAdV-7 associated severe pneumonia needs to be considered with high priority in clinical practice.
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Archives of virology · Jul 2014
ReviewMiddle East respiratory syndrome coronavirus (MERS-CoV): evidence and speculations.
In 2012, a novel human coronavirus emerged and was tentatively named "Middle East respiratory syndrome coronavirus" (MERS-CoV). The high mortality rate of MERS-CoV focused attention on the ecology of the virus. It has been found that MERS-CoV belongs to the group C lineage of the genus Betacoronavirus. ⋯ Recently, the MERS-CoV and its neutralizing antibodies were detected in dromedary camels. Despite the limited number of reported cases of person-to-person transmission, the rapid evolution of the virus poses a continuous threat to humans worldwide. This paper reviews the current state of knowledge regarding the virology, clinical spectrum, evolution, diagnosis and treatment of MERS-CoV infections.
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Archives of virology · Jul 2014
Development of novel AllGlo-probe-based one-step multiplex qRT-PCR assay for rapid identification of avian influenza virus H7N9.
Recently, human deaths have resulted from infection with low-pathogenicity avian influenza virus H7N9 strains that have emerged recently in China. To strengthen H7N9 surveillance and outbreak control, rapid and reliable diagnostic methods are needed. To develop a sensitive quantitative real-time RT-PCR assay for rapid detection of H7N9 viral RNA, primers and AllGlo probes were designed to target the HA and NA genes of H7N9. ⋯ Finally, the diagnostic sensitivities of the multiplex qRT-PCR, virus isolation and TaqMan qRT-PCR were compared using pharyngeal swabs and environmental samples. These analyses yielded positive results in 46.7 %, 43.3 % and 20.0 % of the samples, respectively. The novel multiplex AllGlo qRT-PCR is a rapid and sensitive method to identify H7N9 virus in clinical and environmental samples and can be used to facilitate studies on the epidemiology of H7N9 virus.
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Archives of virology · Sep 2012
Development and evaluation of a reverse transcription loop-mediated isothermal amplification assay for rapid detection of a new SFTS bunyavirus.
The etiological agent of severe fever with thrombocytopenia syndrome (SFTS) is a bunyavirus that was first identified in China in 2009. We have developed and validated a one-step, single-tube, reverse-transcription loop-mediated isothermal amplification (RT-LAMP) assay for detection of SFTS bunyavirus (SFTSV). ⋯ When combined with the fluorescent detection reagent (FDR) method, results could be determined by observing a color change within 30 min. As an accurate, rapid, simple and low-cost diagnostic method, this RT-LAMP assay will be helpful for detecting and preventing further SFTSV infection in China.