Travel health – or travel medicine – consists of medications, travel vaccinations, and health advice that help to keep you healthy when you travel. Your immune system is used to viruses and bacteria in your home country, but you are vulnerable to developing illness due to pathogens common in other locales. Some destinations have illnesses that may make people seriously ill, have permanent health consequences, or even cause death. The last thing you want while on your globe-trotting adventure is to come down with an illness.