Prevention of Diarrhea

Diarrhea prevention is boring public health that works: clean water, clean hands, safe food, and two vaccines. Most episodes in India are preventable.

Water: the first line

• Drink treated water: boiled (rolling boil 1 minute), filtered, or purified - the habit that prevents the most diarrhea in India
• Store drinking water covered, in clean containers, with a dedicated ladle - the storage contaminates as often as the source
• On the road: bottled water sealed, or carry and purify - and remember ice is water too

Hands: the cheapest vaccine

• Soap and water before eating, before cooking, after the toilet, after changing diapers - the single most cost-effective health habit known
• Alcohol sanitizers help but do not replace soap for the germs that matter here (norovirus, parasites)

Food: the heat-and-peel rules

• Eat it hot, eat it peeled, or leave it: cooked food served steaming; fruits you peel yourself; raw salads and chutneys only where the kitchen is trustworthy
• Street food wisdom: choose the stall with high turnover and fresh cooking over the pretty one with pre-cut food sitting out
• Reheat leftovers fully; do not keep cooked food warm at room temperature for hours
• Wash vegetables and fruits in clean water; wash hands and surfaces after raw meat and eggs

The vaccines and the babies

• Rotavirus vaccine: part of the infant immunization schedule - prevents the deadliest childhood diarrhea
• Cholera vaccine exists for outbreak-prone settings - a doctor's call
• Breastfeeding exclusively for 6 months: the infant's shield - every feed carries antibodies
• Safe bottle hygiene when bottles are used: sterilize, or prefer cup feeding

One-line summary

Prevent diarrhea with safe water (boiled or purified, stored clean), soap at the four key moments, the hot-or-peeled food rule, careful street-food choices, the rotavirus vaccine for infants, and exclusive breastfeeding for the first 6 months.