Case definitions for major infectious disease syndromes from household and clinic surveillance in Asembo, western Kenya (Lwak Hospital) and Kibera, Nairobi (Tabitha Clinic), June 1, 2006 – May 31, 2008.

*Episodes of illness could meet more than one case definition (e.g. ARI and ALRI, ARI and diarrhea, ALRI and diarrhea.) AFI is mutually exclusive with ARI/ALRI and some types of diarrhea (i.e. bloody).**Elevated respiratory rate for age based on WHO Integrated Management of Childhood Illness algorithm [14]; ***IMCI danger signs are maternal report of convulsions, inability to drink or breastfeed, or vomiting everything, or on exam lethargy or unconsciousness. [14]¶IMCI signs/symptoms of dehydration are the following: sunken eyes, slow skin pinch, restless/irritable behavior, drinking eagerly or not at all.[14]