Epidemiology and Genetic Characterization of Classical Human Astrovirus Infection in Shanghai, 2015-2016.

Objective: Human astroviruses (HAstVs) are single-stranded RNA viruses of the family. Infection of classic HAstVs is one of the most common causes of acute viral gastroenteritis (infectious viral diarrhea). There is a lack of data on the prevalence and genetic characterization of classic HAstVs in acute viral gastroenteritis in the whole population.

Normal values for CD4 and CD8 lymphocyte subsets in healthy Chinese adults from Shanghai.

The aim of this study was to establish reference ranges for lymphocyte subsets in Chinese adults. Venous blood specimens were obtained from 614 healthy, human immunodeficiency virus (HIV)-seronegative adults in Shanghai. Flow cytometry was used to determine percentages and absolute numbers of CD4 and CD8 T lymphocytes.