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Table 3 Annualized Rubella IgM positive cases incidence rate by county, 2017–2018, Liberia

From: Rubella transmission and the risk of congenital rubella syndrome in Liberia: a need to introduce rubella-containing vaccine in the routine immunization program

County

Mid-Year populationa

Rubella IgM positive cases

Annualized incidence rate per 100,000 population

Bomi

91,593

41

22.4

Grand Kru

60,152

26

4.5

Margibi

232,918

66

3.4

Sinoe

124,747

29

3.8

Lofa

313,014

68

6.2

River Gee

82,132

17

6.1

Grand Cape Mount

153,386

19

21.6

Grand Gedeh

164,360

20

10.9

Maryland

176,733

20

14.2

Bong

366,547

33

5.7

Grand Bassa

253,001

19

2.3

Gbarporlu

103,502

7

2.7

Rivercess

88,758

6

10.3

Nimba

542,289

29

3.4

Montserrado

1,550,718

72

11.6

Total

4,303,851

472

5.5

  1. aProjected from the 2008 population census [26]