After the devastating Nepal flash floods, experts warn that contaminated water, food and disrupted sanitation can increase the risk of gastrointestinal infections, including diarrhoea, vomiting, typhoid, cholera and hepatitis A and E. Flood-exposed food, untreated water and poor storage can also lead to dehydration and electrolyte loss, particularly in children, older adults and medically vulnerable people. Experts recommend safe drinking water,…