Pregnant for more than nine months, yellow discharge, what to do

Patient's question:

No

Doctor's answer:

Simply speaking, from the perspective of effectiveness, it actually doesn't have much impact. Because the flu is mostly caused by viruses! Every flu virus is different! Since you don't know what kind of virus will attack next, there is naturally no good way to prevent it. Moreover, viruses mutate very quickly, and flu vaccines cannot precisely include all possible viruses. Moreover, once a mutation occurs, it becomes a new virus, and previously developed vaccines will not be very effective.