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15 November 2016
Zika Virus Infection  


- a cause of microcephaly and Guillain-Barré syndrome
 


The Alert Response Level under the Government's Preparedness and Response Plan for the Zika Virus Infection is activated

Zika virus infection is a mosquito-borne disease caused by Zika virus. The symptoms of Zika virus infection include skin rash, fever, conjunctivitis, muscle or joint pain and general malaise.

The current major concern is the association with adverse pregnancy outcome (microcephaly) and neurological and autoimmune complications such as Guillain-Barré syndrome (GBS). The World Health Organization has concluded that Zika virus infection during pregnancy is a cause of congenital brain abnormalities, including microcephaly, and that Zika virus is a trigger of GBS.

Apart from GBS, acute disseminated encephalomyelitis (a disease of the central nervous system) was recently found to be one of the neurologic manifestations possibly resulted from Zika virus.

Zika virus is mainly transmitted to humans through the bite of an infected Aedes mosquito. It has also been found in human semen and transmission by sexual contact has been confirmed. Sexual transmission of Zika virus between men who have sex with men has been identified. Other modes of transmission such as blood transfusion and perinatal transmission are possible.
 

Dengue fever

 


Pregnant women and women preparing for pregnancy should not travel to areas with ongoing Zika virus transmission. Use of mosquito repellent containing DEET during travel and returning from these areas for a period of at least 21 days are advised for all travellers including pregnant women.

Pregnant women are advised to:
  • attend antenatal follow up regularly and tell the attending doctor history of recent travel;
  • observe for symptoms of Zika virus infection and seek medical advice as soon as possible if feeling unwell.

Pregnant woman should not have sex with her partner who had travelled to affected areas, or else condom should be used throughout the pregnancy.
 

For details on prevention of Zika virus infection, including those for pregnant women, women preparing for pregnancy and travellers going to affected areas, please refer to the factsheet of Zika Virus Infection.

For details on screening of blood donors to prevent Zika virus infection, please refer to Hong Kong Red Cross Blood Transfusion Service website. For further details, donors may enquire through hotline: 2710 1234.
 

Complications of Zika virus infection
Complications of Zika virus infection

Prevention of Zika virus infection
Prevention of Zika virus infection

Smart tips for driving vectors away
Smart tips for driving vectors away

Prevent vector-borne diseases, safeguard our health
Prevent vector-borne diseases,
safeguard our health

Take indoor precaution, enjoy a vector-free environment
Take indoor precaution,
enjoy a vector-free environment

Take preventive measures against vectors, enjoy safe outing
Take preventive measures against vectors,
enjoy safe outing

Prevent bites and stings during travel, have a nice trip
Prevent bites and stings during travel,
have a nice trip

 Details

 

Preparedness and Response Plan

 

Areas with ongoing Zika virus transmission

 

General measures on preventing mosquito bites and mosquito breeding

 

Press Releases

 

Letters

 

Health Education Materials

 

Related Links and Issues

 

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