Why people don’t die or get serious flu or infection when they travel to different continent? Won’t our immune system get exposed to altogether different kinds of bacteria and viruses?

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There had been many incidents in history when people from other continents brought outbreak of diseases along with them (for eg, diseases brought by the Spaniards to the Incas), why such things doesn’t happen today, atleast not on a large scale?

Also I’m not from science background, so sorry if the question was dumb.

In: Biology

6 Answers

Anonymous 0 Comments

When I first moved to another country and got a cold, it was the worst, most horrible I ever had. After that, though, things got better! It might take getting used to some different biota in the water, but because of vaccinations, there isn’t really much in the way of smallpox, typhoid, etc, in countries like there used to be.

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