It is estimated that nearly 1 Billion people travel by air both domestically and internationally because of the ease of the travel. Due to these facilities, there are also health risks associated with it. Some of these risks or diseases are community-wide and many of them can be prevented by taking the right immunization or vaccinations before travelling abroad. There are some diseases that only found in a specific area. Therefore, make sure that your basic vaccines are up to date before travelling. Some vaccines are mandatory to take before travelling to certain parts of the world.