Flu activity at baseline level
January 10, 2013
Influenza activity is at the baseline level, according to the latest surveillance data of the Centre for Health Protection.
The weekly number of influenza detections at the Public Health Laboratory Centre was 48 in the week ending January 5, as compared to 40, 41 and 45 in the preceding three weeks.
The weekly influenza-like illness consultation rates for sentinel general out-patient clinics and private doctors were 1.9 and 34.2 in the week ending January 5, which were also at the baseline level.
The current circulating influenza viruses consisted mainly of influenza A(H3N2) at 56.2%, influenza A(H1N1)2009 at 41.7%, and influenza B at 2.1%.
The viruses were similar to those currently circulating in the US and match well with the vaccine viruses in Hong Kong.
As the influenza season is expected to begin in the coming weeks, target groups are advised to receive influenza vaccinations as soon as possible to protect their health.