Fig. 2.
Monthly patterns of influenza trends in samples testing positive to influenza virus or viral nucleic acid in 10 countries of southern and south-eastern Asia, 2006–2011
a This represents the mean value for the samples testing positive on any given month from 2006 to 2011 as a percentage of all the samples that tested positive during each year.
Note: Data from 2009 were excluded because of the presence of pandemic A(H1N1)pdm09, which did not follow the usual seasonality pattern. The latitude of each country’s capital city is shown at the top of each panel.
