In 2005 the CenterforDiseaseControlandPrevention (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。
2
Data on morbidity and mortality caused by enteric fever between 1994 and 2004 were extracted from the Guangxi CenterforDiseaseControlandPrevention.
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。
3
A survey by Hangzhou CenterforDiseaseControlandPrevention shows that the scale of youth smoking is increasing and the age of people who smoke tends to be lower.