The activity level of influenza in Hong Kong continues to rise, with multiple schools and care homes experiencing outbreaks of influenza-like illness. The Centre for Health Protection of the Department of Health urged all individuals aged 6 months and older to get vaccinated against seasonal influenza as soon as possible (excluding those with known contraindications) to reduce the risk of severe illness and death.
There have been 244 cases reported in primary schools and 43 cases in kindergartens.
Hong Kong has entered the summer influenza season, and the influenza activity continues to rise. The CHP's latest surveillance data showed that the percentage of respiratory specimens testing positive for seasonal influenza viruses during the past week (October 5 to 11) was 12.02 per cent, which is higher than the 9.70 per cent recorded during the preceding week and exceeds the peak of 10.54 per cent during the winter influenza season earlier this year. Influenza A(H3) is the predominant circulating strain, accounting for nearly 80 per cent of all detected viruses, followed by influenza A(H1) at slightly over 10 per cent. Influenza B accounted for the remainder. The influenza admission rate in public hospitals is 0.67 cases per 10,000 population, which is higher than the 0.52 cases recorded during the preceding week. There has also been an increase in outbreaks of ILI in schools and RCHs over the past two weeks. As of October 15, 451 outbreaks had been reported in schools since the start of the school year in September. Among them, 43, 244 and 164 cases occurred in kindergartens/child care centres, primary schools and secondary schools, respectively. During the same period, nine severe cases and one fatal case of paediatric influenza involving children aged 3 to 17 have been recorded. Eight of them had good past health.
To boost SIV rates, enrolment for the SIV School Outreach Programme has started since the beginning of June this year, which was earlier than last year. With the concerted efforts of the Government and various community sectors (including the medical sector and schools), approximately 2,300 schools (99 per cent) are going to arrange SIV school outreach activities. Among these, over 1,330 schools (58 per cent) have scheduled to carry out the outreach activities by the end of this month, and over 2,160 schools (94 per cent) by the end of next month (November), which are respectively higher than last year's 45 per cent and 83 per cent. Currently, about 410 schools have held school outreach activities, with the earliest session taking place on September 29.
"Through the concerted efforts of schools, this season's school outreach activities will generally be completed earlier than last season's. However, given the emergence of this year's summer influenza season, coupled with the recent increase in seasonal influenza activity and the number of school outbreaks, we have urged relevant schools to advance the vaccination outreach services further, where feasible. Following intensive coordination by the CHP, 15 schools (including seven secondary schools, two primary schools and six kindergartens/child care centres) will advance their outreach activities originally scheduled for December this year or January next year to before the end of next month. The CHP will continue to actively liaise with the remaining relevant schools to provide feasible assistance," Dr Tsui said.
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