Because the flu virus changes every few years, there are so many kinds of flu, such as H1N1 and H5N1. The antibodies for one kind of flu can't help you fight against all kinds of flu. 4 All, good health habits (习惯) may also help you from catching a cold or flu. Washing you...
Stomach flu is an illness which is usually caused by a virus. Someone with stomach flu may have stomach cramps(胃痉挛),diarrhea(腹泻), a fever and might throw up(呕吐). He or she will probably feel pretty sick for a day or two but will then get better. There ...
But there is concern that the virus could vary again over the coming months leading to a new and potentially more dangerous flu outbreak later in the year and a vaccine that will be less effective in preventing its spread. As of May 27 the virus had spread to more than 50 countries; ...
Someone with stomach flu may have stomach cramps(胃痉挛),diarrhea(腹泻 ),a fever,and might throw up(呕吐).He or she will probably feel pretty sick for a day or two,but will then get better. There is no vaccine(疫苗) for stomach flu.If you ,have it,you'll w...