Pig farmers have denied any link to the recent Japanese encephalitis cases, saying no workers or animals had fallen sick. 'We have regular meetings with our members but none of them have observed any abnormal situation in their pig farms. The pigs are reported to be very healthy,' said Wong Kwong-wing, chairman of the Hong Kong Pig Farms Association, which represents all 280-odd pig farms in Hong Kong. Mr Wong pointed out that the first fatal case of Japanese encephalitis earlier this month was from a residential area of Kwai Chung without any pig farms. The victim, a 29-year-old Indonesian maid who worked for a family of seven at Kau Wa Keng San Tsuen, first showed symptoms on May 29 and died on June 7 - five days after she was admitted to Princess Margaret Hospital. However, there are three pig farms within 2km of the Palm Springs area in Yuen Long where the latest case of the disease was reported. 'Pigs are only one of the sources of infection. But there is no concrete evidence showing that the recent cases are linked to pigs,' Mr Wong said. 'For more than 30 years, local pig farmers have been very cautious about the risk of Japanese encephalitis. So we have tried our best to maintain hygiene in the farms to avoid the disease. 'None of the workers from the farms are reported to have been infected with the disease so far.' The chairman added that all farms had stepped up their hygiene and anti-mosquito measures amid the Japanese encephalitis outbreak scare. 'But we would also be pleased if the government could provide vaccinations for all 700 workers from local pig farms to protect us from the disease,' he said.