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Table 2 Entomologic indices in the present investigation (2012)

From: Impact of repeated ivermectin treatments against onchocerciasis on the transmission of loiasis: an entomologic evaluation in central Cameroon

Study period

 

No of chrysops caught*

BD

TP

Infection rate (%)

Infective rate (%)

MHL3 load

  

S

D

S+D

S

D

S+D

S

D

S+D

S

D

S+D

S

D

S+D

S

D

S+D

March

 

282

42

324

213.9

39.3

253.2

572.5

0.0

572.5

3.9

2.4

3.7

2.5

0.0

2.2

100.7

0.0

100.7

April

 

270

31

301

136.0

17.0

153.0

204.6

0.0

204.6

3.3

0.0

3.0

2.2

0.0

2.0

67.7

0.0

67.7

May

 

584

26

610

303.8

15.5

319.3

30.2

17.3

47.5

2.1

11.5

2.5

0.9

11.5

1.3

11.6

9.7

10.9

June

 

313

11

324

157.0

7.0

164.0

352.0

0.0

352.0

3.5

0.0

3.4

1.9

0.0

1.9

117.3

0.0

117.3

 

Total

1449

110

1559

810.5

78.8

889.5

1159.3

17.3

1176.6

3.0

3.6

3.0

1.7

2.7

1.7

78.0

9.7

70.0

 

p-value

-

 

-

 

-

 

0.94

 

0.89

 

-

 
  1. *All the Chrysops were dissected except one C. silacea caught in March; BD= biting densities; TP= transmission potential; MHL3= mean head L3 load. S= Chrysops silacea; D= Chrysops dimidiata; S+D= both species combined.