Calvin K.Y. Cheng

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BACKGROUND The relationship between seasonal influenza vaccine and susceptibility to 2009 pandemic A/H1N1 virus infection is not fully understood. METHODS One child 6-15 years of age from each of 119 households was randomized to receive 1 dose of inactivated trivalent seasonal influenza vaccine (TIV) or saline placebo in November 2008. Serum samples were(More)
In winter 2008, kindergartens and primary schools in Hong Kong were closed for 2 weeks after media coverage indicated that 3 children had died, apparently from influenza. We examined prospective influenza surveillance data before, during, and after the closure. We did not find a substantial effect on community transmission.
BACKGROUND The efficacy of seasonal influenza vaccination against 2009 pandemic influenza A(H1N1) remains unclear. METHODS One child aged 6-17 years in each of 796 households was randomized to receive 2009-2010 seasonal trivalent inactivated influenza vaccine (TIV) or saline placebo between August 2009 and February 2010. Households were followed up with(More)
OBJECTIVES To investigate the prevalence of cerebral palsy in local children aged 6 to 12 years and to evaluate service utilisation by those children who attend mainstream schools. DESIGN Cross-sectional survey. SETTING Mainstream primary schools and special needs schools in Hong Kong. PARTICIPANTS Headmasters or headmistresses of special needs(More)
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