Laboratory-confirmed influenza infection among SARI patients aged <5 years, by demographic and clinical characteristics, at 9 sites in Kenya, July 2007–June 2013.

aAdjusted for variables that were significant at p<.2 in the bivariate analysis and data collection site;
bPearson chi-square;
cData not collected in Siaya DH and Tingwangi;
¥Row percentages shown.
*Signs such as stridor, nasal flaring, tachypnea, chest in-drawing and grunting were evaluated at the time of patient presentation to the hospital.