What to expect though is a bout of the flu from air conditioning due to lack of maintenance. Make a cocktail mix of alcohol and washing up liquid when there (find another mix online somewhere if you want) in a cheap spray bottle and spray it into the filters etc.

Dengue is something that you may come across but with the current weather wouldn't worry about it! but worth researching the symptoms and being aware that Tawa-Tawa (Milk-Milk) boiled into a tea is a better cure than any hospital.

Besides that wouldn't worry.