Rates of Acute Lower Respiratory Illness by age group from household and clinic surveillance in Asembo, western Kenya (Lwak Hospital) and Kibera, Nairobi (Tabitha Clinic), June 1, 2006 – May 31, 2008.

<p>*Rates from household visits for ALRI are adjusted by the percentage of persons with reported cough or difficulty breathing who did not have an exam done at home (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0016085#s2" target="_blank">methods</a>). In Asembo, in the age categories <1 year, 12–23 months, 24–59 months, <5 years, 5–17 years, 18–34 years, 35–49 years, ≥50 years and ≥5 years, these percentages were 29%, 33%, 46%, 39%, 72%, 41%, 33%, 24%, and 49%, respectively. For Kibera, for the same age groups, the percentage without an exam were 36%, 33%, 43%, 38%, 60%, 21%, 30%, 37%, and 40%, respectively.</p><p>**Adjusted clinic rates were calculated by extrapolating from those with same syndrome defined at household visit who sought care at a clinic besides the designated referral clinics, Lwak and Tabitha (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0016085#s2" target="_blank">methods</a>). In Asembo, in the age categories <1 year, 12–23 months, 24–59 months, <5 years, 5–17 years, 18–34 years, 35–49 years, ≥50 years and ≥5 years, the percentage of all clinic visits for ALRI to Lwak were 45%, 45%, 51%, 46%, 51%, 49%, 48%, 43%, and 49%, respectively. For Kibera, the percentage of all clinic visits for ALRI to Tabitha 77%, 84%, 84%, 82%, 81%, 76%, 69%, 68%, and 77%, respectively.</p><p>Incidence is number of episodes of ALRI per person-year.