I was in Nepal two years ago and got the stomach flu. Last time I was only in Kathmandu and Pokhara and didn't do any trekking, so it was not critical, although it was very unpleasant.
Two years later, now, I am in Nepal again. I thought surely I would have developed some kind of immunity.
I was proven wrong when I reached Annapurna base camp and got the stomach flu there. Needless to say the next days trekking down where a pure nightmare.
When I got back in Kathmandu, feeling better, I got another version of the stomach flu again.
Can I expect to develop immunity against these diseases? I am planning on doing the Everest base camp expedition in another two years, but am now having doubts if this is a good idea. I really am not mentally prepared to walk sick for days like that again.
How do other people deal with this kind of problem? I had anti diarrhoea meds with me, but they did absolutely nothing for me.