Table 1.

Onchocerciasis endemic communities by geographical area and sub-area, population at risk and population eligible for ivermectin treatment in the Amazonian focus of southern Venezuela

Geographical area	Geographical sub-areaa	No of communities per endemicity levelb			Population at risk	Eligible population (%)
		Hyperendemic	Mesoendemic	Hypoendemic
Padamo	1. Upper Padamo	0	0	6	617	529 (85.7)
	2. Upper Cuntinamo	0	3	1	225	188 (83.6)
Ocamo	3. Ocamo–Orinoco	0	0	4	245	223 (91.0)
	4. Lower Ocamo	0	2	5	279	249 (89.3)
	5. Middle Ocamo	0	5	1	508	481 (94.7)
	6. Jénita–Putaco	4	0	0	218	192 (88.1)
	7. Upper Ocamo–Shitari	17	2	1	755	660 (87.4)
	8. Upper Ocamo–Parima	16	4	0	589	497 (84.4)
Mavaca	9. Mavaca–Orinoco	0	0	12	927	804 (86.7)
	10. Manaviche	0	1	1	140	129 (92.1)
	11. Mavaca	0	0	3	216	193 (89.4)
	12. Mavaquita	0	0	11	944	841 (89.1)
Platanal	13. Platanal	3	70	10	569	506 (88.9)
Guaharibos	14. Unturán	5	0	0	338	307 (90.8)
	15. Guaharibos	2	0	0	139	123 (88.5)
	16. Peñascal	3	0	0	255	216 (84.7)
Orinoquito	17. Mayo	8	0	0	477	407 (85.3)
	18. Orinoquito	14	0	0	795	688 (86.5)
Parima	19. Parima B	25	0	0	1045	843 (80.7)
	20. Parima C	9	0	0	609	505 (82.9)
	21. Parima A	19	0	0	917	789 (86.0)
	22. Porewë	7	0	0	247	218 (88.3)
	23. Pasumopë	5	0	0	296	260 (87.8)
	24. Shamatari	4	0	0	289	250 (86.5)
	25. Posheno	3	0	0	146	121 (82.9)
Chalbaud	26. Hashimú	7	0	0	356	321 (90.2)
	27. Chalbaud	10	0	0	300	258 (86.0)
Ventuari	28. Upper Ventuari	0	0	1	136	118 (86.8)
Uasadi	29. Uasadi	0	0	2	176	148 (84.1)
Caura	30. Upper Caura	0	1	0	72	68 (94.4)
Siapa	31. Upper Siapa	6	0	0	406	324 (79.8)
Total (%)		167 (69.3)	25 (10.4)	49 (20.3)	13,231	11,456 (86.6)

^a The numbering of the geographical sub-areas corresponds to that indicated in the map of Fig. 1

^b Endemicity levels defined as: hyperendemic, microfilarial prevalence ≥60 %; mesoendemic, mf prevalence = 20–59 %; hypoendemic, mf prevalence <20 % [24]