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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]