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

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

Characteristic	Samples Collected	Samples Tested	Influenza Positive	Influenza types and subtypes
	Samples Collected	Samples Tested	Influenza Positive	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)

ISSN: 1471-2334