I am going to Thailand in January for 5-6 weeks and am very worried about getting bitten by mosquitoes as I seem to attract them (from recent experience in Greece) I know you can take tablets but I heard they can make you feel very sick. Also I have now heard about dengue fever and am wondering what are the chances of catching these diseases and should I go at all!!!!!!! We are going to the South East part of Thailand.
There is no risk of malaria in the major resorts and cities of Thailand. If your trip is going to be off the "beaten track" you should consult with your GP or specialist travel vaccination service for advice specific to your itinerary. The risk of acquiring any insect born disease can be reduced by wearing a long sleeved shirt and long trousers especially at sunrise and sunset when the risk of being bitten is greatest. You should also use an insect repellent containing DEET (diethylmethyltoluamide). I would not allow fear of disease to inhibit your travel plans. Get the right advice and follow it and you should have a wonderful experience.