The geographic distribution of onchocerciasis in the 20 participating countries of the African Programme for Onchocerciasis Control: (2) pre-control endemicity levels and estimated number infected

Table 4 Estimated number of people that would have been infected with Onchocerca volvulus in the 20 APOC countries in 2011 if there had been no ivermectin treatment

	Population per km2 in CDTi areas	Surveyed area (1000 km²)	Rural population in surveyed area (1000)	Number infected with *O.volvulus (1000)*
	Population per km2 in CDTi areas	Surveyed area (1000 km²)	Rural population in surveyed area (1000)	Estimate	Quantile 0.025	Quantile 0.975
Angola	3.8	1,015	3,812	440	410	475
Burundi	341.0	24	8,252	658	603	717
Cameroon	24.2	430	10,389	2,810	2,674	2,956
CAR	5.2	448	2,312	592	562	624
Chad	21.6	257	5,557	551	516	591
Congo	34.8	271	9,432	512	442	605
DRC	22.1	2,053	45,391	13,155	12,869	13,462
Equatorial Guinea	22.0	23	433	58	55	62
Ethiopia	46.7	446	20,842	2,882	2,677	3,117
Gabon	NA	191	722	49	35	66
Kenya	NA	57	3,035	68	37	123
Liberia	30.2	96	2,884	554	515	596
Malawi	237.4	77	18,245	817	727	968
Mozambique	NA	549	9,889	330	275	398
Nigeria	65.3	858	56,016	8,510	8,292	8,750
Rwanda	NA	20	9,550	228	179	283
South Sudan	13.8	535	7,380	1,361	1,269	1,464
Sudan	14.6	346	5,053	58	50	68
Tanzania	19.4	393	7,631	1,061	975	1,152
Uganda	56.4	180	10,135	865	814	925
Total	27.1	8,270	236,959	35,559	35,085	36,116

ISSN: 1756-3305