Okafor G O, Obi G O, Chukwudebelu W O
Trans R Soc Trop Med Hyg. 1979;73(6):648-50. doi: 10.1016/0035-9203(79)90012-9.
We have determined the incidence of hepatitis B surface antigen (HBsAg) in an urban (Enugu) and a rural (Okpatu) population groups in Nigeria. There were no statistically significant differences between the incidence in the two populations. Contrary to earlier reports we did not observe any significant age-related differences in the incidence rates within either population group. In general our results are similar to those reported for the urban inhabitants of Ibadan (several hundred miles west of Enugu) and its surrounding rural population. The low carrier rate recorded for schoolchildren drawn from a mainly high socio-economic group in our population has led us to suggest that socio-economic status alone or together with exposure to mosquito and other insect bites are probably the most relevant factors in the transmission of HBsAg in Nigerians.
我们已确定尼日利亚城市（埃努古）和农村（奥克帕图）人群中乙肝表面抗原（HBsAg）的发生率。这两个人群的发生率在统计学上没有显著差异。与早期报告相反，我们在任何一个人群组中均未观察到发生率与年龄有任何显著差异。总体而言，我们的结果与关于伊巴丹（位于埃努古以西数百英里处）城市居民及其周边农村人口的报告结果相似。我们人群中主要来自高社会经济群体的学童记录的低携带率使我们认为，单独的社会经济地位或与接触蚊子及其他昆虫叮咬一起，可能是尼日利亚人HBsAg传播中最相关的因素。
