Table 1.
Descriptive statistics for influenza testing, January 2007–December 2013
| Hospital/clinic | Period of data included in analysis | Number tested | Tested positive for influenza, n (%) | Hospitalized SARI cases tested | SARI cases tested positive for influenza, n (%) | Outpatient ILI/ALRIa cases tested | ILI/ALRI cases tested positive for influenza, n (%) | Male, n (%) | Median age in years (IQR) |
|---|---|---|---|---|---|---|---|---|---|
| St. Elizabeth Hospital (Lwak)b | 2007–2013 | 7493 | 1107 (14·8) | 1162 | 105 (9·0) | 6331 | 1002 (15·8) | 3655 (48·8) | 5·0 (2·1–12·8) |
| Siaya County Referral Hospital (CRH) | 2010–2013 | 4769 | 325 (6·8) | 4769 | 325 (6·8) | N/A | N/A | 2373 (49·8) | 1·8 (0·8–7·6) |
| Kakamega CRH | 2008–2013 | 5801 | 630 (10·9) | 3970 | 331 (8·3) | 1831 | 299 (16·3) | 3226 (55·6) | 1·7 (0·8–3·5) |
| Ting'wang'i Health Center | 2010–2013 | 1453 | 191 (13·1) | N/A | N/A | 1453 | 191 (13·1) | 690 (47·5) | 2·2 (1·1–4·2) |
| Western Kenya region | 2007–2013 | 19 516 | 2253 (11·5) | 9901 | 761 (7·7) | 9615 | 1492 (15·5) | 9944 (51·0) | 2·7 (1·0–7·0) |
| Kenyatta National Hospital | 2008–2013 | 3576 | 268 (7·5) | 2288 | 124 (5·4) | 1288 | 144 (11·2) | 2019 (56·5) | 0·8 (0·5–1·5) |
| Tabitha Clinic (Kibera)b | 2008–2013 | 6964 | 1263 (18·1) | N/A | N/A | 6964 | 1263 (18·1) | 3306 (47·5) | 5·2 (1·9–15·3) |
| Nyeri CRH | 2008–2013 | 4927 | 653 (13·3) | 3159 | 351 (11·1) | 1768 | 302 (17·1) | 2741 (55·6) | 1·3 (0·8–3·0) |
| Nakuru CRH | 2008–2013 | 4138 | 561 (13·6) | 2288 | 250 (10·9) | 1850 | 311 (16·8) | 2258 (54·6) | 1·0 (0·7–2·2) |
| Central Kenya region | 2008–2013 | 19 605 | 2745 (14·0) | 7735 | 725 (9·4) | 11 870 | 2020 (17·0) | 10 324 (52·7) | 1·6 (0·8–4·4) |
| Dadaab refugee camp | 2008–2013 | 3064 | 571 (18·6) | 2165 | 384 (17·7) | 899 | 187 (20·8) | 1713 (55·9) | 1·4 (0·8–4·0) |
| Kakuma refugee camp | 2007–2013 | 4942 | 649 (13·1) | 3584 | 441 (12·3) | 1358 | 208 (15·3) | 2701 (54·7) | 1·0 (0·7–3·0) |
| Northern/Northeastern region | 2007–2013 | 8006 | 1220 (15·2) | 5749 | 825 (14·4) | 2257 | 395 (17·5) | 4414 (55·1) | 1·0 (0·7–3·0) |
| Mombasa CRH | 2008–2013 | 2907 | 278 (9·6) | 2097 | 171 (8·2) | 810 | 107 (13·2) | 1669 (57·4) | 1·0 (0·5–2·0) |
| Kilifi CHc | 2007–2013 | 5158 | 225 (4·4) | 5158 | 225 (4·4) | N/A | N/A | 2995 (58·1) | 0·7 (0·2–1·5) |
| Coastal Kenya region | 2007–2013 | 8065 | 503 (6·2) | 7255 | 396 (5·5) | 810 | 107 (13·2) | 4664 (57·8) | 0·8 (0·3–1·7) |
| All sites | 2007–2013 | 55 192 | 6721 (12·2) | 30 640 | 2707 (8·8) | 24 552 | 4014 (16·3) | 29 346 (53·2) | 1·7 (0·8–4·2) |
N/A; not applicable.
a
Acute lower respiratory illness.
b
Population‐based disease surveillance sites.
c
At Kilifi CH, samples were collected from children <5 years who were hospitalized with severe or very severe pneumonia.