Japanese Encephalitis Reported In Hong Kong, Vietnam

[penguinsix]

The Hong Kong Centre for Health Protection (CHP) is urging the public to take measures to avoid mosquito bites after a case of Japanese encephalitis (JE) was reported in mid-June.

Laboratory test results just confirmed that the JE virus was found in a batch of specimens of adult Culex tritaeniorhynchus collected in Mong Tseng Wai, Lau Fau Shan, Yuen Long, on June 26.

“Positive results from time to time are not unexpected as JE is endemic among local pigs. Mosquitoes may acquire the virus from wading birds and pigs, which are known hosts of the virus,” a CHP spokesman said. “The anti-mosquito actions and monitoring of JE vectors will continue.”

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http://www.theglobaldispatch.com/japanese-encephalitis-reported-in-hong-kong-vietnam-23303/

[sharon sanders]

Re: Japanese Encephalitis Reported In Hong Kong, Vietnam

Here is the CHP report from June 17:

17 June 2014

Confirmed local case of Japanese encephalitis under CHP investigation

The Centre for Health Protection (CHP) of the Department of Health (DH) is today (June 17) investigating a confirmed local case of Japanese encephalitis (JE), and hence urged the public to take precautions against mosquito-transmitted diseases.

The female patient aged 26, has developed fever, headache and vomiting since June 9. She attended the Accident and Emergency Department of Tuen Mun Hospital and was admitted for management on June 10. She is now afebrile in stable condition.

Her serum and cerebrospinal fluid specimens tested positive for antibodies against JE upon testing by the CHP's Public Health Laboratory Services Branch.

Initial enquiries revealed that the patient lives in Tin Heng Estate, Tin Shui Wai. Her home contact has remained asymptomatic and would be put under medical surveillance. She has no recent travel history or animal contact and could not recall any recent mosquito bites. Investigations are ongoing.

Officers of the CHP have conducted home visits and surveys among neighbours of the patient's residence for active case finding and arranging blood tests. A hotline of CHP (2125 1122) was set up for public enquiries which would operate till 9pm today and from 9am to 6pm tomorrow (June 18) onwards.

A health talk will be held in Shun Tak Fraternal Association Yung Yau College, Tin Shui Wai, this evening to deliver health advice to the public. Residents of Yuen Long District, including those in Tin Shui Wai, with JE symptoms are also advised to promptly seek medical attention.

The CHP will issue letters to doctors and hospitals to draw their attention to the case and enlist their support in early diagnosis, control and prevention of JE.

This is the first JE case reported to the CHP this year. Six cases (two local, three imported and one unclassified) were reported in 2013 while three (one local and two imported) were filed in 2012.

"JE is a viral disease transmitted by the bite of infected mosquitoes. Culex tritaeniorhynchus (Culicine mosquito) is the principal vector of JE and is nocturnal. It mainly breeds in waterlogged fields, marshes, ditches and small stagnant collections of water around cultivated fields. The mosquitoes become infected by feeding on pigs and wild birds infected with the JE virus, and then transmit the virus to humans and animals during the feeding process. JE is endemic in the Mainland and Southeast Asia," a spokesman for the CHP explained.

Most JE virus infections are mild without apparent symptoms other than fever with headache. More severe infections are clinically characterised by quick onset of headache, high fever, neck stiffness, impaired mental state, coma, tremors, occasional convulsions (especially in infants) and paralysis.

To prevent contracting JE, members of the public, particularly those living in rural areas, are reminded to take heed of the following preventive measures, especially after dark:

* Wear loose, light-coloured long-sleeved clothes and trousers;
* Use effective insect repellents containing DEET over exposed parts of the body and clothing when outdoors; and
* Use mosquito screens or nets in rooms which are not air-conditioned.

Travellers to endemic areas of JE should take the following precautions:

* Avoid outdoor exposure to mosquito bites at dusk and dawn, especially in rural areas, when mosquitoes spreading this virus are most active;
* Apply effective insect repellents containing DEET over exposed parts of the body and clothes; and
* Consider vaccination and arrange travel health consultation with doctor to determine the need for vaccination and vector preventive measures at least six weeks before departure to endemic areas in Asia or the Western Pacific for staying over one month, particularly in high-risk rural areas.

The public may visit the CHP's JE page (www.chp.gov.hk/en/content/9/24/28.html) or that of the DH's Travel Health Service (www.travelhealth.gov.hk) for further information on JE and outbreaks in other areas.

"Vector-borne diseases" is the theme of this year's World Health Day (WHD) of the World Health Organization. The public may visit the CHP's WHD Page (www.chp.gov.hk/en/view_content/28258.html) for more information.

Ends/Tuesday, June 17, 2014


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The latest on Vietnam situation (hat tip Ronan Kelly):

http://www.flutrackers.com/forum/showthread.php?p=538726

[Shiloh]

Re: Japanese Encephalitis Reported In Hong Kong, Vietnam

Source: http://www.scmp.com/news/hong-kong/a...ound-yuen-long

Hong Kong
Second encephalitis case found in Yuen Long
PUBLISHED : Tuesday, 22 July, 2014, 3:58am
UPDATED : Tuesday, 22 July, 2014, 3:58am
Ernest Kao ernest.kao@scmp.com

Health authorities have confirmed the city's second case of Japanese encephalitis this year and are not ruling out the possibility of more instances over the summer.

Blood and sputum tests on a 35-year-old woman residing at Ching Nga Court on Yuen Long's Tai Shu Ha Road East tested positive for the virus on Saturday.

She is now in stable condition at Tuen Mun Hospital...

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Source: http://www.thestandard.com.hk/news_d...=20140722&fc=1


Mosquito virus hits second NT woman
Hilary Wong
Tuesday, July 22, 2014


A 35-year-old woman who lives near pig farms in Yuen Long has been diagnosed with the mosquito-borne Japanese encephalitis in the second confirmed local case this year.

The woman, who has no travel history, is in stable condition in Tuen Mun Hospital while family members are under medical surveillance, the Centre for Health Protection said.

The center's community medicine consultant Chuang Shuk-kwan said the patient saw private doctors after she developed fever and headache and was vomiting on July 4.

It was not until July 14 that she went to the Tuen Mun Hospital accident and emergency department and was admitted...