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Journal of Hospital Infection
Volume 69, Issue 2, June 2008, Pages 135-140
Clinical characteristics of nosocomial norovirus outbreaks in Hong Kong
香港医院内诺如病毒爆发感染的特点
O.T.Y. Tsanga, , , A.T.Y. Wongb, C.B. Chowa, R.W.H. Yungb, W.W.L. Limc and S.H. Liud
aInfectious Disease Centre, Princess Margaret Hospital, Hong Kong
bInfection Control Branch, Centre for Health Protection, Hong Kong
cPublic Health Laboratory Centre, Centre for Health Protection, Hong Kong
dHospital Authority Head Office, Hong Kong
Received 2 December 2007; accepted 26 March 2008. Available online 12 May 2008.
Summary
Norovirus outbreaks occur worldwide every year and have become more frequent over the last few years. There were extensive outbreaks in Hong Kong from May to July 2006 and our aim was to describe nosocomial outbreaks from 1 May 2006 to 31 July 2006 in this retrospective observational study. A total of 38 confirmed norovirus outbreaks involving 218 patients were identified. Most of these patients were elderly with a mean age of 74.5 years (range: 3 months to 97 years); 62% of them were either totally or partially dependent for help with daily activities, 83.9% had underlying chronic medical problems and 56% had limited mobility. In all, 97.2% of individuals presented with diarrhoea and only 46.3% of them had vomiting. The median duration for diarrhoea was 3 days and the longest 24 days. The median duration of vomiting was one day and the longest 15 days. Fever occurred in one-third of all cases. Reverse transcriptase–polymerase chain reaction was positive for norovirus in 72.6% cases. We conclude that nosocomial norovirus infection often involves frail elderly patients with limited mobility and that these patients may have more prolonged symptoms.
Keywords: Norovirus; Clinical characteristics; Nosocomial infection
norovirus in Hong Kong.pdf
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发表于 2008-6-11 20:59
发表于 2008-6-11 21:53