title: [Serologic investigation of HBV in 302 patients who had a history of smallpox].
abstract: This paper provides serologic investigation of HBV in 302 persons who had a history of smallpox in Zhumadian County. The results showed that the HBsAg positivity rate (1.3%) was significantly lower than those of the control group 1 (8.3%) and 2 (8.6%) (P less than 0.001). The HBsAg positivity rate between the two control groups had no significant difference (P greater than 0.05). The HBV infection rate (19.2%) was also lower than those of control group 1 (47.7%) and 2 (51.3%) (P less than 0.001). There was not much difference between the two control groups. The determination of cellular immunity showed that the rosette positivity rate (75.93%) and lymphocyte conversion rate (70.39%) of the patients' group were higher than those of control group 1 (62.3% and 52.9%) and 2 (60.93% and 55.3%). It may suggested that patients having had smallpox might have enhanced cellular immunity which might interfere with HBV infection.
authors.affiliation: People's Hospital of Zhumadian County, Henan Province.
authors.forename: Z
authors.initials: Z
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D002353:Carrier State / Q000453:epidemiology*; D002681:China / Q000453:epidemiology; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology*; D006514:Hepatitis B Surface Antigens / Q000097:blood*; D006801:Humans; D008213:Lymphocyte Activation; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012397:Rosette Formation; D016036:Seroepidemiologic Studies; D012899:Smallpox / Q000276:immunology*
chemical_list: D006514:Hepatitis B Surface Antigens