| inapparent infection of hepatitis a virus. | to detect inapparent infection with hepatitis a virus, serial sera were collected from patients with hepatitis a and their contacts in two waterborne epidemics in china. epidemic 1 occurred in a rural village near hangzhou during august 1978-january 1979, and epidemic 2 took place in a rural primary school in pinghu county in zhejiang in april-may 1985. these sera were tested for antibodies against hepatitis a virus (anti-hav), serum glutamic pyruvic transaminase (sgpt) activity, and icteric ind ... | 1988 | 2829622 |
| changing epidemiological characteristics of hepatitis a in zhejiang province, china: increased susceptibility in adults. | hepatitis a is a common acute hepatitis caused by hepatitis a virus (hav). annually, it affects 1.4 million people worldwide. between 1991 and 1994, hav infections were highly endemic in zhejiang province (china), with 78,720 reported hav infections per year. hepatitis a vaccine came on the market in 1995 and was implemented for voluntary immunization. since 2008, hepatitis a vaccine has been integrated into the national childhood routine immunization program. | 2016 | 27093614 |