Ciesielski S, Esposito D, Protiva J, Piehl M
Department of Family Practice, Natividad Medical Center, Salinas, CA 93912.
Am J Public Health. 1994 Nov;84(11):1836-8. doi: 10.2105/ajph.84.11.1836.
All locatable subjects (n = 94) for whom tuberculosis prevalence had been determined in an earlier study were tested with purified protein derivative (PPD) and control antigens, sputum sampling, and chest x-rays. Of the 46 who had been tuberculin negative (confirmed with control antigens) 3 years earlier, 2 had developed active tuberculosis in the interim and 14 (30%) were tuberculin positive. All had been engaged continuously in migrant farmwork. Lack of access to health care, an institutional feature of migrant farmwork, was significantly associated with primary infection.
在一项早期研究中已确定结核病患病率的所有可定位受试者(n = 94)接受了纯化蛋白衍生物(PPD)和对照抗原检测、痰液采样及胸部X光检查。3年前结核菌素阴性(经对照抗原确认)的46名受试者中,在此期间有2人发展为活动性结核病,14人(30%)结核菌素呈阳性。所有人都一直从事流动农业劳动。缺乏医疗保健服务是流动农业劳动的一个制度特征,与原发性感染显著相关。