Figure 2.

RSV-ARI for seasons 1 and 2 by month for each state. A few participants had ARI episodes with symptoms starting prior to surveillance each season (ie, in September) but were within the 7-day window when swabbed in early October and so were included. The numbers adjacent to the points refer to the number of positive RSV-ARI episodes. RSV positivity rate: the number of RSV-ARI–positive samples over the total number of ARI episodes with RSV results available. ARI, acute respiratory infection; RSV, respiratory syncytial virus.