Bit of an odd topic but was just reading up on it this morning as I know of 2 people in the last year that have Amoeba parasites who caught them in the Philippines. Obviously something not many people are keeping an eye out for although the infection is permanent once in the system. I have heard of people getting tapeworm from chicken from vendors as well but the main thing here to remember is hygiene in whatever your up to. Many sources of water are contaminated in some form e.g. if its taken directly from a deep well its untreated which is fine for washing etc in most cases but when people use it to make ice that then ends up in your drink its not the ideal situation and often leads to one of the biggest reasons people get dyoria when visiting the Philippines. Amazing how a few ice cubes can leave you stuck to the toilet for a few days. Chicken we mentioned earlier but one habit I have noticed vendors doing is leaving the chicken from yesterday for today and just reheating it. Obvious issues with reheating but also if BBQ risk of it not being cooked all the way through as well.
On a final note though as people will often talk about STD’s with many other diseases Amoeba’s can actually be passed from one person to another during intercourse so another happy thought for those bar girl lovers that you may end up with something a bit more permanent than your five minute wonder.