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Author Archives: hksar gov

CHP investigates case of measles infection

     The Centre for Health Protection (CHP) of the Department of Health (DH) is today (June 5) investigating a case of measles infection.

     The case involves a 33-year-old man with good past health, who has developed fever since May 31 and rash since June 2. He sought medical advice from a general practitioner on May 31 and attended the Accident and Emergency Department at United Christian Hospital on June 3 and was admitted today for treatment.

     A laboratory test of his respiratory specimen was positive for the measles virus. He has been in a stable condition all along. The patient’s measles vaccination history is unknown. He travelled to Shenzhen during the incubation period but had no travel history during the communicable period.

     According to the patient, he did not have contact with measles patients during the incubation period. His home contacts have remained asymptomatic so far and have been put under medical surveillance.
 
     Upon notification of the case, the CHP immediately commenced epidemiological investigations and conducted relevant contact tracing. Investigations are ongoing. The public places the patient visited during the communicable period are listed in the appendix.

     A spokesman for the DH said, “Those who might have had contact with the patient during the period of communicability are urged to observe if they have developed measles-related symptoms, and to seek medical treatment immediately if such symptoms appear. If they need to visit any health care facilities during the period of medical surveillance, they should also report whether they have symptoms and prior measles exposure history to the healthcare workers so that appropriate infection control measures can be implemented at the healthcare facilities concerned to prevent any potential spread.”

     The spokesman explained that measles is a highly infectious disease caused by the measles virus. It can be transmitted by airborne droplets or direct contact with nasal or throat secretions of infected persons, and, less commonly, by articles soiled with nose and throat secretions. A patient can pass the disease to other persons from four days before to four days after the appearance of skin rash.

     “The incubation period (the period from infection to appearance of illness) of measles ranges from seven days to 21 days. Symptoms of measles include fever, skin rash, cough, runny nose and red eyes. If symptoms arise, members of the public should wear surgical masks, stop going to work or school and avoid going to crowded places. They should also avoid contact with non-immune persons, especially persons with weakened immunity, pregnant women and children aged below 1. Those suspected to have been infected are advised to seek medical attention as early as possible and reveal relevant contact history of measles to healthcare professionals,” the spokesman advised. 

     “Vaccination is the most effective way to prevent measles. Members of the public who are planning to travel to places with high incidence or outbreaks of measles should review their vaccination history and past medical history, especially people born outside Hong Kong who might not have received measles vaccination during childhood. The history of measles vaccination in Hong Kong is available in the CHP’s measles thematic page. Those who have not received two doses of measles-containing vaccines, with unknown vaccination history or unknown immunity against measles are urged to consult their doctor for advice on vaccination at least two weeks before departure,” the spokesman said.
  
     Besides being vaccinated against measles, members of the public should take the following measures to prevent infection:
 

  • Maintain good personal and environmental hygiene;
  • Maintain good indoor ventilation;
  • Keep hands clean and wash hands properly;
  • Wash hands when they are dirtied by respiratory secretions, such as after sneezing;
  • Cover the nose and mouth while sneezing or coughing and dispose of nasal and mouth discharge properly;
  • Clean used toys and furniture properly; and
  • Persons with measles should be kept out of school till four days from the appearance of rash to prevent spread of the infection to non-immune persons in school.
 
     For more information on measles, the public may call the 24-hour health education hotline 2833 0111 or visit the CHP’s measles thematic page. For outbreak news of measles outside Hong Kong or the latest travel health advice, please visit the website of DH’s Travel Health Service. read more

CHP investigates hand, foot and mouth disease outbreak in kindergarten-cum-child care centre in Kwai Chung

     The Centre for Health Protection (CHP) of the Department of Health is today (June 5) investigating an outbreak of hand, foot and mouth disease (HFMD) in a kindergarten-cum-child care centre (KG/CCC) in Kwai Chung, and again urged the public, schools and institutions to maintain strict hand, personal and environmental hygiene.
 
     The 20 affected children, 14 boys and six girls aged 3 to 5, as well as one staff member, have developed oral ulcers, rash over hands or feet and fever since May 9. All of them sought medical attention but none required hospitalisation. All patients are in a stable condition.
 
     Officers of the CHP have conducted a site visit to the school and advised the management on necessary infection control and preventive measures. The school has been put under medical surveillance. Investigations are ongoing.
 
     “HFMD is common in children while adult cases may also appear. It is usually caused by enteroviruses (EVs) such as Coxsackie virus and EV71. It is clinically characterised by maculopapular rashes or vesicular lesions occurring on the palms, soles and other parts of the body such as the buttocks and thighs. Vesicular lesions and ulcers may also be found in the oral cavity. Sometimes patients present mainly with painful ulcers at the back of the mouth, namely herpangina, without rash on the hands or feet,” a spokesman for the CHP said.
 
     “HFMD occurs throughout the year with the usual peak occurring from May to July. A smaller peak may also occur from October to December. According to the CHP’s latest surveillance data, the local activity of hand, foot and mouth disease (HFMD) is at high level. As young children are more susceptible, parents should stay alert to their health. Institutional outbreaks may occur where HFMD can easily spread among young children with close contact,” the spokesman added.

     To prevent HFMD, members of the public, and especially the management of institutions, should take heed of the following preventive measures:
 

  • Maintain good air circulation;
  • Wash hands before meals and after going to the toilet or handling diapers or other stool-soiled materials;
  • Keep hands clean and wash hands properly, especially when they are dirtied by respiratory secretions, such as after sneezing;
  • Cover the nose and mouth while sneezing or coughing and dispose of nasal and oral discharges properly;
  • Regularly clean and disinfect frequently touched surfaces such as furniture, toys and commonly shared items with 1:99 diluted household bleach (mixing one part of bleach containing 5.25 per cent sodium hypochlorite with 99 parts of water), leave for 15 to 30 minutes, and then rinse with water and keep dry. For metallic surfaces, disinfect with 70 per cent alcohol;
  • Use absorbent disposable towels to wipe away obvious contaminants such as respiratory secretions, vomitus or excreta, and then disinfect the surface and neighbouring areas with 1:49 diluted household bleach (mixing one part of bleach containing 5.25 per cent sodium hypochlorite with 49 parts of water), leave for 15 to 30 minutes and then rinse with water and keep dry. For metallic surfaces, disinfect with 70 per cent alcohol;
  • Children who are ill should be kept out of school until their fever and rash have subsided and all the vesicles have dried and crusted;
  • Avoid going to overcrowded places; and
  • Parents should maintain close communication with schools to let them know the latest situation of the sick children.
 
     The public may visit the CHP’s page on HFMD and EV71 infection and Public Health Advice for Play Facilities for more information. read more