How long do antibodies against influenza A remain in the body?

Generally speaking, "swine flu" refers to influenza A. The influenza A antibodies usually remain in the body for about 6-12 months, although the exact duration may vary among individuals. Detailed explanation is as follows:

Influenza A antibodies are protective substances produced by the immune system after infection with the influenza A virus, helping the body recognize and eliminate the virus. After initial infection with the influenza A virus, the immune system initiates an immune response, and specific antibodies are gradually produced over time. These antibodies increase for a period following infection, reach a peak level, and then slowly decline. Typically, after 6-12 months, antibody levels may drop to lower levels, and the protective effect against the virus also weakens accordingly. However, this timeframe is not absolute; individual immune function, the viral dose, and strain type can all influence the duration of antibody presence. For example, individuals with stronger immune systems may maintain antibodies for a relatively longer period.

Maintaining a regular sleep schedule and ensuring adequate rest can help support normal immune function. Eating a balanced diet rich in vitamins and proteins, such as fresh fruits and vegetables, lean meats, and fish, along with regular moderate physical exercise, can also enhance physical health and improve resistance to the influenza A virus.