A young child is vaccinated against the H1N1 virus in Schiedam November 23, 2009. Vaccination programmes against H1N1 have started in many European countries in recent weeks to try to halt the spread of the virus, which is commonly known as swine flu and was declared a pandemic by the World Health Organisation (WHO) in June. The number of H1N1 swine flu deaths in Europe has doubled almost every two weeks since the middle of October and 169 people died of the virus in the past week, disease surveillance experts said on Monday. REUTERS/Jerry Lampen (NETHERLANDS DISASTER ENVIRONMENT HEALTH SOCIETY)