Table 1.
Distribution of Influenza Viruses Diagnosed by Molecular Methods Among Children, by Presenting Condition, From Kilifi, Kenya, 2007–2010
| Condition | No. of Children |
Influenza Virus Detected, by Type, No. (%b) of Children |
||||
|---|---|---|---|---|---|---|
| Eligible | Tested | Anya | A | B | Cc | |
| NARI | 196 | 196 | 1 (0.5) | 1 (0.5) | 0 | 0 |
| URTI | 331 | 331 | 13 (3.9) | 11 (3.3) | 1 (0.3) | 2 (0.9) |
| Severe pneumonia | 1926 | 1615 | 76 (4.7) | 57 (3.5) | 13 (0.8) | 7 (0.6) |
| Very severe pneumonia | 503 | 387 | 23 (5.9) | 14 (3.6) | 6 (1.6) | 4 (1.4) |
| All pneumonia (severe and very severe) | 2429 | 2002 | 99 (4.9) | 71 (3.5) | 19 (0.9) | 11 (0.8) |
| Total | 2956 | 2529 | 113 (4.5) | 83 (3.3) | 20 (0.8) | 13 (0.7) |
All children resided in the Kilifi Health and Demographic Surveillance System.
Abbreviations: NARI, no acute respiratory infection; URTI, upper respiratory tract infection.
a Includes influenza A, B, or C viruses. There were 13 influenza diagnoses among outpatients with URTI, but 14 influenza viruses were detected because 1 child was coinfected (with influenza A and C viruses), and there were 99 influenza diagnoses among all inpatients with pneumonia, but 101 influenza viruses were detected because 2 children were coinfected (with influenza A and B viruses in one and influenza A and C viruses in the other).
b % is number detected / number tested
c Because samples collected during 2007 were not tested for influenza C virus, percentages are based on the following denominators: NARI, 139; URTI, 235; severe pneumonia, 1126; and very severe pneumonia, 288.