Drs. Paul Pottinger (“Germ”) & Chris Sanford (“Worm”) answer your travel health questions:

When can I donate blood after visiting a region with malaria?

Is it safe to swim in polluted rivers while overseas? If my work says I need to travel abroad while pregnant, do I have to?

How well do those UV water purifier thingies work?

Are there any precautions that someone who’s had a heart attack should take prior to–and during–an international trip?

How safe are home-brewed alcoholic beverages?

Given dengue fever, is it safe to travel to Cancun and Mexico City while pregnant?