Infants with red and swollen mosquito bites cannot necessarily be vaccinated. Infants bitten by mosquitoes red and swollen, if the body is also accompanied by fever, diarrhea and other phenomena, you can not play the vaccine. Because at this time the infant body resistance and immunity will be relatively poor, after vaccination will not only lead to the body’s original symptoms worsened, may also increase the body’s chance of vaccine adverse reactions. If the baby was bitten by mosquitoes, only simple redness and swelling, the body does not appear other abnormalities, the normal vaccine, generally will not affect the safety of the vaccine as well as immunity, and will not lead to the baby’s body discomfort. Infants need to be observed at the vaccination site for 30 minutes after vaccination to clarify whether there is any adverse reaction, if the adverse reaction is more serious, further treatment measures need to be taken in time.