Let’s say your blood type is O negative. The universal donor. You can give blood to everyone else, but can only receive blood from others who are O negative. In your own country there might be 6-7% O negative, so it shouldn’t be an issue finding a donor in an emergency situation. But what about in other countries around the world? If you are traveling in South-East Asia for example, most countries have an O negative frequency of around 1 in 1,000 people. There have been several cases in the past few years where travelers had accidents in countries like Thailand and it took a BBC article to finally find a compatible donor. You may also have issues finding a … Continue reading Are you a traveler with a rare blood type?