Why do I still get sick even though I have been vaccinated against HFMD? This is a question that parents often ask. The vaccine available on the market is a monovalent vaccine against enterovirus 71 (EV71), which can only prevent HFMD caused by EV71, but not those caused by other enteroviruses. Secondly, although the EV71 vaccine has a good protective effect, with a protective efficacy of more than 90%, it cannot guarantee 100% prevention. Although the vaccine does not completely prevent HFMD, vaccination significantly reduces the incidence of severe illness and death. Do I still need to be vaccinated if I have HFMD? If your baby has HFMD caused by EV71, there is no need to revaccinate. If the hand, foot and mouth disease is caused by other enteroviral infections, it is still necessary to continue the EV71 vaccination. Consult your local vaccination center for details of the vaccination process. Can the same baby get HFMD again and again? The vast majority of HFMD patients develop protective antibodies against the serotypes of enteroviruses they have been infected with, so the chances of having repeated infections with the same enterovirus serotype are low. In other words, HFMD that has already been infected with EV71 virus will have a lower chance of being infected again. However, there is still the possibility of contracting other types of HFMD caused by other types. Can HFMD be cured? If the symptoms are mild and there are no other complications, the patient will recover completely and there will be no after-effects. However, severely ill patients with complications such as brainstem encephalitis, acute flaccid paralysis, pulmonary edema, pulmonary hemorrhage, etc. may have sequelae of varying degrees. Therefore, it is important to take good care of your baby once you have identified HFMD. I heard that EV71 vaccine has a great adverse reaction, is it true? According to the results of vaccine clinical trials, EV71 vaccine has a good safety profile. Some children can have transient fever, localized redness, swelling, hardness and pain after vaccination, which are mainly mild and usually last no more than 3 days and can be relieved by themselves. Do 5-year-old children still need to be vaccinated against HFMD? HFMD occurs in children under the age of 5. The EV71 vaccine is suitable for children aged 6 months to 5 years old. children over the age of 5, as well as adults, tend to have already acquired antibodies, and the vaccine is generally not recommended. It is said that the HFMD vaccine is best administered before the age of 1. Is it too late for my baby to be vaccinated when he/she is already 3 years old? It is recommended to have your baby vaccinated by the age of 1 year. However, if your baby is over 1 year old and has not been vaccinated yet, and has not had HFMD in between, the earlier the recommendation we give the better. Although the baby is already 3 years old, it is still too late. Which children are not suitable for HFMD vaccination? Those with known allergy to any of the components of the EV71 vaccine, patients with fever, acute illness and patients with acute exacerbation of chronic diseases should not be vaccinated. Is the HFMD vaccine free? Currently the HFMD vaccine is a Class II vaccine and requires parents to pay out-of-pocket. If you want to prevent HFMD, you must take proper precautions. In addition to the vaccine, you should also pay attention to general preventive methods. Be sure to pay attention to hand and mouth hygiene, especially washing hands with water, hand sanitizer or soap before touching the mouth and nose, before eating or handling food, after using the toilet, after touching herpes/whistling secretions, after changing diapers or handling objects contaminated by feces; disinfecting surfaces or environments contaminated by secretions or excretions in a timely manner; avoiding taking children to participate in group activities during periods of high incidence of the disease and avoiding contact with those who are latently infectious.