Table 2.

Excess mortality rate (per 100,000 population) and excess deaths (absolute number) according to influenza virus subtypes prevalent in southern Brazil, 2002–2015.

		24–59		60–69		70–79		≥80
		Excess mort rate	Exc. deaths	Exc. mort rate	Exc. deaths	Exc. mort rate	Exc. deaths	Exc. mort rate	Exc. deaths
Mean of annual excess mortality during all period	Pnm and Flu	0.2	27	0.8	17	2.9	29	20.2	85
	Resp	0.4	57	3.8	64	12.3	113	37.2	143
	All causes	1.3	176	13.0	214	37.0	331	116.5	422
Mean of annual excess mortality in H1/B pre-pandemic years (2002 and 2008)	Pnm and Flu	0.0	0	0.4	7	2.1	19	2.2	9
	Resp	0.0	0	3.5	54	7.4	59	15.4	42
	All causes	0.9	118	13.1	201	35.7	287	88.3	255
Excess mortality during 2009	Pnm and Flu	2.5	331	3.2	57	12.0	113	20.5	82
	Resp	5.2	698	7.4	129	17.6	167	7.3	29
	All causes	7.1	953	21.0	368	58.6	555	125.1	501
Mean of annual excess mortality in H1/B pos-pandemic years (2010, 2012, and 2013)	Pnm and Flu	0.4	60	1.5	31	4.2	44	17.3	83
	Resp	0.7	99	3.0	62	14.3	150	21.5	102
	All causes	0.9	129	5.6	116	16.6	178	54.6	262
Mean of excess mortality during H3 years (2003, 2004, 2005, 2006, 2007, 2011, 2014, 2015)	Pnm and Flu	0.0	4	0.6	12	2.1	22	27.4	112
	Resp	0.1	13	4.1	66	12.6	111	50.6	191
	All causes	1.2	148	15.1	240	42.3	371	145.6	514
Excess mortality during severe H3 epidemics (2007)	Pnm and Flu	0.0	0	0.6	10	2.1	19	49.5	176
	Resp	0.2	24	8.5	138	32.5	288	134.2	477
	All causes	2.9	375	35.6	576	136.1	1,209	449.6	1,598
Relative risk 2009/mean of period	Pnm and Flu	12.6		3.8		4.1		1.0
	Resp	12.4		1.9		1.4		0.2
	All causes	5.3		1.6		1.6		1.1
Relative risk 2009/mean of H3 years	Pnm and Flu	83.9		5.6		5.6		0.7
	Resp	49.2		1.8		1.4		0.1
	All causes	6.2		1.4		1.4		0.9
Relative risk 2009/severe H3 epidemics	Pnm and Flu	#		5.5		5.6		0.4
	Resp	28.3		0.9		0.5		0.1
	All causes	2.5		0.6		0.4		0.3

Exc., excess; Pnm and FLU, pneumonia and influenza; Resp, Respiratory causes International Causes of Deaths ICD chapter J (J10–J18.9).

# - Relative risk has no valid value as denominator is zero.