在美国,每年有30000例甲肝患者,其中约100人病死。研究者最近宣布,预防甲肝的新疫苗已研制成功。美国Brooklyn的一个犹太人社区,多年发生难以控制的甲肝传染,主要感染对象为学龄儿童。这一地区的许多居民通常到Catskill山下的Monroe(NY)地区避暑,甲肝病毒也会由Brocklyn带到Monroe。位于西点的Merck Sharp与Dohme研究室的David Nalin及其同事,选择Monroe的Kiryas Joel社区进行甲肝疫苗的有效性试验。他们选择长期居住于此地的儿童1037 In the United States, there are 30,000 cases of hepatitis A each year, of whom about 100 are dead. Researchers recently announced that a new vaccine against hepatitis A has been developed. A Jewish community in Brooklyn, United States, has many years of unmanageable Hepatitis A transmission, with the main target of infection being school-age children. Many people in this area usually go to summer in the Monroe (NY) area of ​​Catskill, and Hepatitis A is also brought to Monroe by Brocklyn. David Nalin and colleagues at Merck Sharp and Dohme Laboratories in West Point chose the Kiryas Joel community in Monroe for a Hepatitis A vaccine effectiveness study. They choose children 1037 who have long lived here