I've heard it has bad side effects. Also people with G6PD deficiency (about 400M people worldwide) cannot take it. So some screening tests are needed.

I spoke to a few folks in India, and seems like the majority are on some form of maintenance dose of chroloquine from a getting malaria in the last 6-8 months. I hear this is pretty common practice there.

And not just OTC, but handed out for free and in large quantities at govt hospitals.

I am eager to see this data as well.

I am living in India right now and have never heard about this. It is interesting that you would gather that the majority of us are on some dose of Chloroquinine. Nobody I know, is.

I had the same doubletake at first reading, but I suspect GP meant the majority of the folks s/he talked to.

Yes, that's what I meant. I can't possibly assume that the handful of people I spoke with are a representation of the whole country.