Stay Away from the Sentinelese!
The Indian government has full control over the nearby Sentinel Island, which is a part of the Andaman Islands. By full control, we mean they leave the inhabitants on Sentinel Island alone. Not just because they don’t want to spread disease to the people, but their hostility towards foreigners/invaders is nothing to mess with.
Quite recently, there was a missionary who lost his life in an attempt to convert the Sentinelese to Christianity, despite the warnings from his peers and the Indian government. So, if you do get a chance to visit India, you need to keep your viruses and bacteria away from the Sentinel Islands, which isn’t all that hard to do.