Figure 2.

The proportion of antiviral medication prescriptions to patients with acute respiratory infection enrolled ≤2 days since illness onset by influenza infection status, 2012–2013 influenza season, US Influenza Vaccine Effectiveness Network, 2012–2013. *Clinicians at this site had access to study-related influenza polymerase chain reaction testing results, which may have influenced prescribing patterns. No information was available as to nonstudy influenza testing performed at this site and others. Abbreviation: PCR, polymerase chain reaction.