Most cases of acute diarrhoea are potentially infectious to others. Viruses are easily spread, mainly through direct contact with vomit or faeces from an infected person, or through contact with a contaminated object or surface. Occasionally, the virus may be transmitted by airborne particles generated from vomiting and diarrhoea. People can reduce their chances of getting infected by carefully washing their hands after going to the toilet and before handling food. People looking after a person with the virus must also wash their hands thoroughly. Alcohol-based handwash solutions, available from pharmacies, have been better at reducing the spread of infection than soap and water, and are less drying to the skin. Anyone with acute diarrhoea should stay at home if possible to reduce the spread of infection. It is strongly recommended not to visit hospitals and nursing homes, and not to swim in public pools.