May 10th 2008: Concern on water purification tablets

I saw news about water supplies being contaminated by salt water and water purification tablets are not useful in those areas.Should we be sending medicine for diarrhea and malaria for widespread illness ?I'm not sure if those medicines are over-the-counter or need prescription. May be we can ask a pharmacist.We need to give those with care, children may need a different dose than an adult...etc. A safer bet may be mosquito nets.

KL