FYI- I just went to my dr yesterday and told her we were planning a cabo wedding in April. She recommended the Hep. A shot for anyone traveling to Mexico or the Caribbean. It is a 2 shot series 1 now and 1 six months later. She said it protects against Hep A. which is passed from (fecal matter) people not washing there hands properly. She said even if you are staying at a 5 star resort it is highly recommended due to workers that are preparing your food. I know it is disgusting but I decided to play it safe. She said it is worse than montazumas revenge.