JOHANNESBURG, Jan. 27 — More than a year after a virulent strain of tuberculosis killed 52 of 53 infected patients in a rural South African hospital, experts here and abroad say the disease has most likely spread to neighboring countries, and some say urg
JOHANNESBURG, Jan. 27 — More than a year after a virulent strain of tuberculosis killed 52 of 53 infected patients in a rural South African hospital, experts here and abroad say the disease has most likely spread to neighboring countries, and some say urg
约翰内斯堡，1月27日—南非一所乡村医院中一种致命的肺结核曾使53名受感染的患者中的52人丧生，一年多之后当地和国外的专家表示这种疾病很有可能已经传播到邻近的国家，并且一些专家说当务之急是必须控制病毒的扩散。