!["If one person is infected, the whole family must be vigilant!" Beware of this disease![fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)
Under the influence of cold air, yesterday, rain and snow cooling weather appeared in many places in northern China, and the cooling range in some areas reached 10 ~ 18 ° C. Today, the cold air continues to move east to the south, giving our country a ...
influenza Cold Respiratory infectious diseases influenza virus
12-12
