Influenza Virus Surveillance in Pakistan during 2008-2011
Figure 2
Distribution of Influenza Subtypes among Different Age Groups during 2008-11.
Pattern of influenza viruses detection by subtypes in different age groups. Influenza B is shown in Dark blue, A/H1N1 in Red, A /H3N2 in Yellow and A/H1N1 pdm 09 in Green. Note: Cases with missing age data were not included.