A pig is seen inside its enclosure at a pig farm in Ratchaburi province, 135 km (84 miles) west of Bangkok April 28, 2009. The United Nations' food agency said on Tuesday its was mobilising its animal health experts to check if the new strain of flu virus widely described as swine flu is really directly linked to pigs. REUTERS/Chaiwat Subprasom (THAILAND ANIMALS HEALTH IMAGES OF THE DAY)
Foto: CHAIWAT SUBPRASOM
