原标题：流感疫苗需每年打三类人建议接种 疾病预防 随着秋冬季节到来，不少地区进入季节性流感流行期。目前，流感样病例人数及流感病毒阳性率有所上升，但流感活动强度仍处于较低水平。 疾控专家指出，接种流感疫苗是预防流感最有效的措施。由于流感病毒发生突变的频率很高。发生变异的流感病毒...
The original title: influenza vaccine should be recommended vaccination disease prevention play three kinds of people every year As autumn winter season, many areas into the seasonal flu epidemic. At present, the number of influenza-like cases and influenza virus positive rate has increased, but the flu activity is still in a lower level. CDC experts pointed out that influenza vaccination is the most effective measures to prevent flu. Because of the flu virus mutation frequency is very high. Mutant flu...
