The Centers for Disease Control (CDC) began a nationwide program to provide free vaccinations against influenza A virus subtype H5N1, also known as bird flu, that is scheduled to last until Sept. 30, the centers said Wednesday.
疾病管制局一日說,已開始一項全國性計劃,提供免費疫苗接種對抗H5N1A型流感,也稱為禽流感,這項計劃預定持續到9月30日。
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