Geodemographics profiling of influenza A and B virus infections in community neighborhoods in Japan

BMC Infectious Diseases

Table 2 Numbers of influenza A and B patients and their incidence by age group^†

		2004/05 Season		2005/06 Season		2006/07 Season		2007/08 Season
Age Group (yr)	Population No.	No. patients	II (%)	No. patients	II (%)	No. patients	II (%)	No. patients	II (%)
Virus Type A
< 5	5,553	368	6.6	702	12.6	452	8.1	458	6.6
5-9	5,857	433	7.4	772	13.2	787	13.4	794	7.4
10-14	6,263	271	4.3	462	7.4	581	9.3	466	4.3
15-64	73,365	560	0.8	1,348	1.8	1,441	2.0	1,117	0.8
≥65	21,858	54	0.2	97	0.4	103	0.5	53	0.2
Total	112,901	1,686	1.5	3,381	3.0	3,364	3.0	2,888	1.5
Virus Type B
< 5	5,553	569	10.2	2	0.0	165	3.0	40	0.7
5-9	5,857	743	12.7	3	0.1	569	9.7	70	1.2
10-14	6,263	219	3.5	4	0.1	803	12.8	18	0.3
15-64	73,365	1,287	1.8	16	0.0	436	0.6	45	0.1
≥65	21,858	142	0.6	0	0.0	11	0.1	4	0.0
Total	112,901	2,960	2.6	25	0.0	1,984	1.8	177	0.2

^† Population No., Number of people in the study area. No.patients, Number of patients in the study area each season.
II, Influenza incidence in the study area.

ISSN: 1471-2334