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Table 2 Influenza activity (positivity, circulating types and subtypes) among patients hospitalized with SARI in Ethiopia, 2009–2015

From: Epidemiology of influenza in Ethiopia: findings from influenza sentinel surveillance and respiratory infection outbreak investigations, 2009–2015

Characteristic Samples Collected Samples Tested Influenza Positive Influenza types and subtypes
A A(H1N1) pdm2009 A(H3N2) B
N N (%)a N (%)b N (%)c N (%)c N (%)c N (%)c
All cases 1381 1268 (92) 39 (3) 35 (90) 11 (28) 24 (62) 4 (10)
Year
 2009 142 52 (37) 3 (6) 3 (100) 0 (00) 3 (100) 0 (0)
 2010 74 74 (100) 2 (3) 2 (100) 2 (100) 0 (0) 0 (0)
 2011 53 53 (100) 1 (2) 1 (100) 0 (0) 1 (100) 0 (0)
 2012 62 62 (100) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
 2013 159 138 (100) 12 (9) 10 (83) 0 (0) 10 (83) 2 (17)
 2014 609 608 (100) 17 (3) 15 (88) 7 (41) 8 (47) 2 (12)
 2015 282 281 (100) 4 (1) 4 (100) 2 (50) 2 (50) 0 (0)
Age
  < 2 885 805 (91) 27 (3) 23 (85) 7 (26) 16 (59) 4 (15)
 2–4 258 238 (92) 6 (3) 6 (100) 1 (17) 5 (83) 0 (0)
 5–14 146 135 (92) 3 (2) 3 (100) 2 (67) 1 (33) 0 (0)
 15–49 55 53 (96) 2 (4) 2 (100) 1 (50) 1 (50) 0 (0)
 50–64 12 12 (100) 1 (8) 1 (100) 0 (0) 1 (100) 0 (0)
  > =65 8 8 (100) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
 Missed 17 17 (100) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
Sex
 Female 617 570 (92) 17 (3) 14 (82) 5 (29) 9 (53) 3 (18)
 Male 764 698 (91) 22 (3) 21 (95) 6 (27) 15 (68) 1 (5)
Site
 Adama Hospital 47 47 (100) 1 (2) 1 (100) 0 (0) 1 (100) 0 (0)
 Adere Hospital 127 123 (97) 4 (3) 3 (75) 3 (75) 0 (0) 1 (25)
 Felegehiwot Hospital 259 259 (100) 4 (2) 4 (100) 0 (0) 4 (100) 0 (0)
 Mekele Hospital 306 304 (99) 14 (5) 13 (93) 1 (7) 12 (86) 1 (7)
 Yekatit 12 Hospital 642 535 (83) 16 (3) 14 (88) 7 (44) 7 (44) 2 (13)
  1. aDenominator is the number who were sampled
  2. bDenominator is the number who were tested
  3. cDenominator is the number who tested positive