Table 1.

Number of pertussis cases, hospitalizations and deaths, mean incidence rate per 100,000 inhabitants, prevalence rate per 100,000 inhabitants, and median case fatality rate, in Brazil and by region from 2010 to 2015.

		Hospitalizations due to pertussis	Deaths due to pertussis			Case fatality rateb
	Pertussis cases N (%)	N (%)	All ages, N (% in all deaths)	Mean incidence ratea	Prevalence rate	All ages, median (%)	Children <1 year of age, mean (%)
Brazil	26,086 (100)	15,703 (100)	415 (100)	2.19	13.01	1.90‡	3.2
Southeast	11,506 (45)	6,111 (39)	175 (42)	2.28†	13.88†	1.60‡	3.3
Northeast	6,081 (24)*	4,142 (26)*	99 (24)*	1.81†	10.93†	1.75‡	2.6
South	5,254 (21)*	2,863 (18)*	49 (12)*	2.75	18.55	0.93‡	1.9
Midwest	1,930 (8)*	1,351 (9)*	52 (12)*	2.23†	13.58†	2.37‡	2.8
North	1,315 (2)*	1,236 (8)*	40 (10)*	1.67†	10.31†	2.30‡	5.7

Source data: SINAN,²¹ SIH, ²² SIM²³

Footnote: ^aaverage incidence per 100,000 inhabitants; ^bcalculated as follows: number of deaths/number of pertussis cases in each region; *p < 0.05 (each of the Brazilian regions compared to the Southeast Region; X² test); ^†p < 0.05 (each of the Brazilian regions compared to the South Region; Student t-test for independent samples); ^‡p < 0.05 (All ages compared to the children <1 year of age; Brazil and between each of the Brazilian regions; Student t-test for independent samples)