Excess hospitalizations and in-hospital mortality associated with seasonal influenza in Italy: a 11-year retrospective study

Table 3 Estimated numbers and rates per 100,000 people of excess hospitalization associated with influenza, by age group. Seasons 2008/09 – 2018/19, Italy

Season^a	0–4 years		5–14 years		15–64 years		≥ 65 years		Total
Season^a	N	Rate^b	N	Rate^b	N	Rate^b	N	Rate^b	N	Rate^b
2008/09	2207	78.6	666	12.0	3171	8.2	13971	116.8	16,503	27.9
2009/10	1932	68.5	1193	21.4	3203	8.2	10042	83.0	20,613	34.8
2010/11	2749	97.5	941	16.8	4275	10.9	10895	89.3	22,797	38.5
2011/12	2315	82.7	585	10.4	3771	9.6	14937	120.6	18,966	32.0
2012/13	2535	91.4	851	15.0	4536	11.6	14791	117.1	23,241	39.3
2013/14	1871	68.4	480	8.4	3416	8.8	12418	96.6	16,849	28.5
2014/15	2197	82.2	696	12.2	4759	12.2	18070	138.1	22,885	38.7
2015/16	1788	68.7	632	11.1	3212	8.3	10453	78.9	17,203	29.1
2016/17	1756	69.5	467	8.3	3950	10.2	19295	144.1	19,073	32.2
2017/18	2988	121.8	763	13.6	6069	15.8	28959	214.3	30,556	51.6
2018/19	2767.7	116.5	701	12.6	5679	14.8	23542	172.7	28,211	47.6
Total	25,106		7,975		46,042		177,373		236,896
11-season mean	2282	86.0	725	12.9	4186	10.8	16125	124.7	21536	36.4
3-season mean^c	2503.9	102.6	643.7	11.5	5232.7	13.6	23932	177.0	25946.7	43.8

ISSN: 1471-2334