Always drink bottled water.

For the first few days it might be advisable to wash your mouth with bottled water.

Eat fruit you can peel.

Always wash fruit well before eating it.

Wash your hands before and after eating.

Always keep a tube of mosquito repellent with you.

Always carry a kit of the basic emergency medicines you might need for diarrhoea, fever, etc. Also, band aids and an antiseptic ointment.

If you do catch a bug, do not panic. It will go away in a few days - but try the following tips to keep it down:

Drink lassi - a yoghurt drink. It will help tone down the bacteria.

Eat plain rice, or try a simple khichdi - an easily digestible mixture of rice and lentils.

Drink plenty of coconut water. It's cooling, and naturally sterilized!

Drink plenty of fluids and take some electrolyte salts if the bug persists.