A quick Google search is all it takes. Before you travel to a new destination, do a little research on what you might need to do to prepare. Are there bugs you need to fend off with nets or sprays? Are there health risks from local animals? Are there areas of the city where the food is known to be less safe? The Centers for Disease Control and Prevention has a comprehensive safety guide for travelers with specific safety precautions outlined for each destination; taking the time to look through their advice is probably a good idea.