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Table 1 Relationship between the Prevalence of Onchocerca volvulus microfilariae and Onchocerca Skin Disease (OSD) among the Residents of Hawal River Valley

From: Epidemiology and psycho-social aspects of onchocercal skin diseases in northeastern Nigeria

 

Males

Females

Both Sexes

Age Group

No. Exam

No. mf +ve

No. OSD +ve

No. Exam

No. mf +ve

No. OSD +ve

No. Exam

No. mf +ve

No. OSD +ve

(Years)

(No. SS)

(%)

(%)

(No. SS)

(%)

(%)

(No. SS)

(%)

(%)

≤ 10

461(114)

18(15.8)

169(36.7)

417(89)

13(14.6)

153(14.6)

878(203)

31(15.3)

322(36.7)

11 20

447(108)

19(17.6)

184(41.2)

454(111)

20(18.0)

181(39.9)

901(219)

39(17.8)

365(40.5)

21 – 30

523(127)

26(20.5)

220(42.1)

461108)

19(19.6)

198(41.0)

984(235)

45(19.1)

409(41.6)

31 – 40

556(142)

30(21.1)

285(51.3)

450(124)

26(19.8)

231(51.3)

1006(266)

56(21.1)

516(51.3)

41 – 50

548(150)

31(20.7)

265(48.4)

498(131)

26(19.8)

230(46.2)

1046(281)

57(20.3)

495(47.3)

≥ 51

507(137)

28(20.7)

223(44.0)

522(140)

25(17.9)

228(43.7)

1029(275)

53(19.3)

451(43.8)

Total

1042(776)

152(19.6)

1346(44.2)

2802(703)

129(18.3)

1212(43.3)

5844(1479)

281(19.0)

2558(43.8)

 

No. SS = No. Skin Snipped

  

mf+ve = Microfilari positive