2nd encephalitis case confirmed
July 18, 2013
Centre for Health Protection Controller Dr Leung Ting-hung has called on the public to take preventive measures against mosquitoes, due to the confirmation of another Japanese encephalitis case, the year's second.
Dr Leung told the media today the case involves a 52-year-old Tin Shui Wai man. The patient in the first case also lived in Tin Shui Wai.
Both cases are believed to be locally-transmitted with the virus source close by.
The disease is caused by the Japanese encephalitis virus, transmitted by the bite of infected mosquitoes, mainly the
Culex tritaeniorhynchus species. The mosquito usually gets the virus by biting pigs or wild birds.
The Secretary for Food & Health chaired an inter-departmental meeting this afternoon to discuss boosting anti-mosquito measures. The Anti-mosquito Steering Committee will meet soon to review the effectiveness of existing precautions.
Dr Leung said surveys will be conducted in Tin Shui Wai in the coming days to see if there are any more cases of the disease. Health talks will be arranged for residents to learn about the symptoms of the illness and ways to prevent it.
The centre will also notify all doctors in Hong Kong to raise their alertness to the disease.
Pest Control Officer In-charge of the Food & Environmental Hygiene Department Yuen Ming-chi said 20
Culex tritaeniorhynchus mosquitoes have been found in two places near where the patients lived. The insects are being tested for the virus.
They breed in stagnant water or drains, and are most active after dark.
Mr Yuen advised people to apply insect repellent when in rural areas, and to stay indoors at night.
Agriculture, Fisheries & Conservation Department Senior Veterinary Officer Dr Shirley Chuk said four pig farms within a 2km radius of the patients' homes have been inspected and nothing unusual found.
The department will continue to monitor pig farms and urge their operators to take anti-mosquito measures.
The nearby Wetland Park will also enhance anti-mosquito measures and post notices to remind visitors to take precautions.
