How many years can the HFMD vaccine be effective?

HFMD vaccine can be effective for years. HFMD vaccine is an inactivated enterovirus 71 vaccine. Here is some analysis of its effectiveness. First, clinical trial data show that HFMD vaccine can induce immunity against enterovirus 71 and has good protection effect in short term. This means that the vaccine reduces the risk of hand, foot and mouth disease for a period of time after vaccination. Second, although the exact period of effective protection may vary from individual to individual, it usually plays an important role for several years. During this period, the vaccine can help the body build a certain immune barrier. Moreover, vaccine-induced immune responses may weaken over time, but they are still important for preventing severe HFMD, which is caused by enterovirus 71, one of the leading pathogens, and vaccination may significantly reduce the severity of the disease even if its effectiveness decreases. In short, HFMD vaccine can provide effective protection for children for several years, reducing the risk of HFMD caused by enterovirus 71 infection and the risk of severe disease, which is of great significance to protect children's health. However, it should be noted that daily protective measures such as maintaining good personal hygiene habits cannot be relaxed by relying solely on vaccines.