I`d say go, great place to go to, in truth though in 3 days you will barely catch the atmosphere, let alone a bug. Golden rules as always don`t drink the water and stay away from street fended food.
Three days is nothing. That's why I recommend a daytrip to Agra for the Taj Mahal, from Delhi (if you land in Delhi). Train departs in the morning and takes 2,5 hours by Shatabdi exp.
With only 3 days, I would say don't even bother. India's the kind of place that takes a couple days to adjust to, and it seems you'll spend more on flight time and adjusting than its worth just to see a few sights in Delhi and a day trip to Agra. Surely there is something else you can see in Japan for that 3 days.
But if you decide to, don't worry about getting sick. Don't drink the water, and eat in busy restarants and you'll probably be fine.
India is such a fantastic place.
The ultimate travel experience.
Easily sick!!! It would be a pity, to miss out on Indian food. It is delicious. Just eat it. 3 days is such a short time. U will recover from being sick.
dont try to do a whole bunch of stuff, because u really dont have the time, and india can be a confusing place.
Just go and hang out. Soak up the atmosphere. Just being in India, will be an experience in itself, even if u dont visit any tourist attractions.
Why don't you put the 800 dollars towards a longer trip when you have saved up more holiday.