Skip to main content
. 2019 May 28;5(2):12–17. doi: 10.32481/djph.2019.005.004

Table 1. Characteristics of pertussis cases in an Amish community outbreak, Kent County, Delaware, January 2018 – October 2018.

Characteristic Cases
n(%)
Primary/Co-Primary cases
n(%)
Secondary/Second Primary cases
n(%)
Sex
Male 88 (49) 45 (25) 43 (24)
Female 93 (51) 47 (26) 46 (25)
Age group (yrs)
<1 9 (5) 5 (3) 4 (2)
1-5 73 (40) 41 (23) 32 (18)
6-10 57 (31) 29 (16) 28 (16)
11-14 18 (10) 9 (5) 9 (5)
15-19 10 (5.5) 4 (2) 6 (3)
20-29 8 (4.4) 2 (1) 6 (3)
>30 6 (3.3) 2 (1) 4 (2)
Vaccination status
Vaccinated 19 (10.5) 11 (6) 9 (5)
Partially vaccinated* 8 (4.4) 4 (2) 3 (1.6)
Unvaccinated 154 (85) 77 (43) 77 (43)

* Partially vaccinated is defined as receipt of ≤ 3 doses of vaccine against pertussis.