In 2005 the Center for Disease Control and Prevention (CDC) estimated that 20 million people in the United States were infected with these viruses.
2005年疾病预防控制中心(CDC)估计美国有两亿人感染了这些病毒。
Data on morbidity and mortality caused by enteric fever between 1994 and 2004 were extracted from the Guangxi Center for Disease Control and Prevention.
我们从广西疾病预防和控制中心获得了1994年至2004年伤寒肠热病发病率和死亡率的数据。
A survey by Hangzhou Center for Disease Control and Prevention shows that the scale of youth smoking is increasing and the age of people who smoke tends to be lower.
杭州市疾控中心调查发现,青少年吸烟比例逐渐加大,吸烟人群呈现低龄化的趋势。
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