Swine influenza or “swine flu” is a highly contagious acute respiratory disease of pigs, caused by one of several swine influenza A viruses. The virus is spread among pigs by aerosols and direct and indirect contact, and asymptomatic carrier pigs exist. Outbreaks in pigs occur year round, with an increased incidence in the autumn and winter. Swine influenza viruses are most commonly of the H1N1 subtype.

Human cases of swine influenza H1N1 have been identified across the globe, with an estimated 100,000 new cases of swine flu in the UK w/c 13th July 2009.. Symptoms of swine flu in humans appear to be similar to those produced by standard, seasonal flu. These include fever, cough, sore throat, body aches, chills and fatigue. For most people this illness appears to be mild. Infection with the virus is treatable with anti-viral drugs. Tests have shown that the human swine influenza H1N1 can be treated with the antiviral oseltamavir (Tamiflu) and zanamivir (Relenza).

It is good practice to follow strict respiratory and hand hygiene during the outbreak:

• Covering your nose and mouth when coughing or sneezing, using a tissue when possible
• Disposing of dirty tissues promptly and carefully
• Maintaining good basic hygiene, washing your hands frequently with soap and water
• Cleaning hard surfaces (e.g. door handles) using a normal cleaning product

Further information can be found here:

NHS Guidance for Businesses

World Health Organisation

Health Protection Agency

Map of the H1N1 virus

Latest advice from the NHS