Dataset:22140569 Search Result
Clinical Information
Cases infected by influenza A (H1N1) 2009 viruses in various periods in Taiwan from May 2009 to April 2011
Age of patients	Wave 1				Wave 2				Interwave period				Wave 3
	Community cases (%)	Hospitalized cases (%)	Fatal cases (%)	CFR*	Community cases (%)	Hospitalized cases (%)	Fatal cases (%)	CFR	Community cases (%)	Hospitalized cases (%)	Fatal cases (%)	CFR	Community cases (%)	Hospitalized cases (%)	Fatal cases (%)	CFR
0–23 months	41 (2.1)	4 (1.0)	0 (0)	0	25 (2.2)	14 (2.6)	0 (0)	0	8 (3.2)	0 (0)	0 (0)	0	63 (5.8)	3 (0.3)	0 (0)	0
2–4 years	95 (4.8)	16 (4.0)	0 (0)	0	63 (5.6)	42 (8.0)	1 (3.7)	2.4	29 (11.5)	4 (3.6)	0 (0)	0	126 (11.6)	54 (5.5)	2 (2.1)	3.7
5–17 years	1309 (66.1)	167 (41.1)	4 (15.4)	2.4	801 (71.6)	198 (37.7)	2 (7.4)	1	77 (30.4)	12 (10.7)	2 (11.8)	16.7	399 (36.9)	81 (8.3)	2 (2.1)	2.5
18–49 years	488 (24.6)	143 (35.2)	12 (46.1)	8.4	210 (18.8)	171 (32.6)	12 (44.5)	7	124 (49.0)	52 (46.4)	6 (35.3)	11.5	420 (38.8)	370 (38.1)	19 (20.0)	5.1
50–64 years	38 (1.9)	48 (11.8)	6 (23.1)	12.5	17 (1.5)	65 (12.4)	7 (25.9)	10.8	9 (3.6)	24 (21.4)	7 (41.2)	29.2	63 (5.8)	298 (30.7)	51 (53.7)	17.1
≥65 years	10 (0.5)	28 (6.9)	4 (15.4)	14.3	3 (0.3)	35 (6.7)	5 (18.5)	14.3	6 (2.4)	20 (17.9)	2 (11.7)	10	11 (1.0)	166 (17.1)	21 (22.1)	12.7
Total	1981 (100)	406 (100)	26 (100)	6.4	1119 (100)	525 (100)	27 (100)	5.1	253 (100)	112 (100)	17 (100)	15.2	1082 (100)	972 (100)	95 (100)	9.8
*: The case fatality ratio (CFR) in hospitalized cases was defined as the percentage of fatal cases among the total number of hospitalized influenza cases and was calculated as the total number of fatal cases divided by the total number of hospitalized cases.