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The Centre for Health Protection (CHP) of the Department of Health is today (February 21) investigating a confirmed case of meningococcal infection, a communicable disease transmitted by direct contact with droplets from carriers or infected persons.
The case involved a 15-year-old girl living in Tuen Mun. She was found to have fever, vomiting, headache and confusion on February 17 and was admitted to Queen Elizabeth Hospital on February 18. The clinical diagnosis was septicaemia and meningitis.
A blood specimen taken from the patient grew Neisseria meningitidis. She is now in a serious condition.
Investigations showed that the patient had no travel history during the incubation period. CHP is now tracing her contacts to offer chemoprophylaxis.
This is the second confirmed case of meningococcal infection this year. Two cases were reported in 2010 and 2009 respectively. No case was reported in 2008.
A spokesman for the CHP said that meningococcal infection is caused by a bacterium known as meningococcus. It is transmitted by direct contact, including droplets from the nose and throat of infected people. The incubation period varies from two to 10 days, and commonly three to four days.
The clinical picture may vary. Severe illness may result when the bacteria invade the bloodstream (causing meningococcaemia) or the brain (causing meningitis).
Meningococcaemia is characterised by the sudden onset of fever, intense headache, purpura, shock and even death in severe cases. Meningitis is characterised by the sudden onset of intense headache, fever, nausea, vomiting, photophobia and stiff neck. Early cases can be treated effectively with antibiotics.
To prevent meningococcal infection, members of the public are advised to:
* Wash hands frequently, and observe good personal and environmental hygiene practices;
* Avoid crowded places;
* Avoid close contact with patients who have fever or severe headache; and
* Cover nose and mouth while sneezing or coughing, and hold the spit with tissue, discard it into a bin with a lid and wash hands immediately.
Members of the public can visit the CHP's website, www.chp.gov.hk, for general information about the infection.
Ends/Monday, February 21, 2011
Issued at HKT 19:33
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