Volume 16, Number 4—April 2010
Household Transmission of Pandemic (H1N1) 2009, San Antonio, Texas, USA, April–May 2009
|Type of contact||No. contacts||Index case-patient received antiviral treatment (attack rate, %)
|All contacts of index case-patients||235||22/185 (12)||8/50 (16)||0.64|
|Contacts who took antiviral prophylaxis||92||12/83 (14)||6/9 (67)||0.003|
*ARI, acute respiratory infection; ILI, influenza-like illness (fever measured or subjective and cough or sore throat).
†Fisher exact test comparing the secondary attack rate for any treatment to no antiviral treatment. Data about antiviral medication were missing for 2 index case-patients and 15 contacts.