People are reminded to guard against intestinal virus infections after a rise in noroviral gastroenteritis outbreaks in elderly homes and hospitals.

Since May, there have been 35 confirmed norovirus outbreaks in elderly homes and seven in hospitals affecting 565 people. These compared with 17 and seven outbreaks in elderly homes and hospitals respectively and 260 people in the first four months.

Seventy-four cases of noroviral gastroenteritis outbreaks in institutions, including childcare centres and schools, involving 999 people have been reported so far this year. In 2005, there were 42 norovirus outbreaks in institutions, affecting 643 people.

Prolonged norovirus season

Centre for Health Protection Principal Medical & Health Officer Dr SK Chuang said gastroenteritis caused by Norovirus is commonly found in Hong Kong all year round but is more active in the winter months.

"However, we have observed a prolonged norovirus season this year, with residential care homes for the elderly particularly affected," she said.

The department is working closely with the Social Welfare Department and the Hospital Authority to monitor the situation. The elderly homes have been reminded to watch for symptoms or viral gastroenteritis and report any suspected cases to the centre. Health education for elderly home staff has been strengthened and talks will also be arranged.

Dr Chuang said norovirus infection can be transmitted via food, water, and objects or serfaces, contaminated with the virus. Good personal hygiene can help prevent the disease. For more tips click here.