The H1N1 vaccine is a safe and effective way to protect yourself from the H1N1 virus, which can cause influenza. The vaccine is recommended for all people over the age of six months, especially those who are at high risk of developing complications from the flu, such as young children, pregnant women, and people with chronic health conditions.
If you are travelling to a country that requires proof of vaccination against H1N1, you should get the vaccine at least two weeks before your departure date. This will give your body time to develop immunity to the virus.
You can find more information about the H1N1 vaccine and travel requirements on the websites of the Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO).