I will be traveling early next year to Siam Reap and Phuket and I am wondering if I need any vaccination while being there. We are planing to go for organize tour to see temples in Siam Reap and will stay maybe 2 nights in there. In Phuket we will stay in resort, but one day we will go to Elephant Sanctuary which is in the jungle. My husband and I we are in our early 60th, but my husband is on few heart pills. We would like to be safe, and I am hoping that somebody had that experience behind and will give me some suggestion.