Upset tummy

GASTROENTERITIS frequently hits more often in the winter because norovirus, one of its common forms, prefers cooler temperatures.

People can also pass on gastroenteritis without suffering from it themselves, or before their own symptoms have developed.

Although the illness can be more serious for infants, the elderly and those who are immune­compromised, most people will recover in a few days as the body fights off the infection and recuperates on its own.

Treatment involves drinking plenty of liquids to prevent dehydration although doctors reject the old standby of a fizzy drink that has gone flat, as the sugar only makes diarrhoea worse. Small amounts of bland food are also recommended.

150% shortage of medicine in Spanish pharmacies.