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The Centre for Health Protection (CHP) of the Department of Health today (October 18) confirmed a case of leptospirosis ,an infectious disease caused by bacteria found in the waste of infected animals.
A CHP spokesman said the patient was a 37-year-old man living in Sheung Shui. He developed fever, malaise, bone pain and vomiting on September 29 and was admitted to North District Hospital on October 2. He has recovered and was discharged on October 17.
Laboratory tests on blood sample of the patient yielded positive results for leptospirosis today.
Preliminary investigations revealed that the man had no travel history during the incubation period. Further investigation is on-going.
This is the eighth leptospirosis cases reported in Hong Kong this year.
There were one local case in 2001, two local cases in 2002, one imported case in 2003, one imported and five local cases in 2004, three imported and four local cases in 2005 and two imported and one unclassified cases in 2006.
The spokesman said leptospirosis was a zoonotic (animal) disease caused by the bacteria, leptospira, which could be found in some animals including rodents, cattle, pigs, horses and dogs.
Most human infections occur through contact with urine excreted by infected mammals primarily through skin abrasions, open wounds or mucous membranes, and occasionally through ingestion or inhalation.
The disease is normally not transmissible among human, and the incubation period is usually between 5 to 14 days.
The spokesman said people infected with leptospirosis commonly presented with a flu-like illness with high fever, headache, muscle pains, red eye, sore throat and rash. In some cases, the disease could cause anaemia (a kind of blood disease) and affect the liver, kidneys, lungs, and other internal organs. The disease can be treated effectively with antibiotics.
"Overseas outbreaks of leptospirosis are usually related to occupational or recreational water exposures, such as water contaminated with urine of infected animals," the spokesman said.
The risk of infection can be minimised by covering open wounds properly and avoiding contact with urine of live mammals and objects contaminated by them as well as polluted water, he said.
Ends/Thursday, October 18, 2007
Issued at HKT 19:13
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