Figure 2From: Respiratory virus surveillance in hospitalised pneumonia patients on the Thailand-Myanmar border Seasonality of virus detection, April 2009-September 2011. Lines indicate the proportion of nasopharyngeal aspirate specimens positive for the virus by month: (a) RSV, (b) Adenovirus, (c) Influenza A & B, and (d) hMPV. The bars indicate the number of pneumonia episodes sampled each month.Back to article page