Authors

Effective/sampling time

Frequency/year

Naseer, Pakistan, 2010 [15]

30/2 year

15 case/an

P = 0.772363

Agaoglu, Turquie, 2005 [16]

32/11 year

2.9 case/an

P = 0.256712

Connolly, Irlande, 2002 [17]

16/8 year

2 case/an

P = 0.296638

A. G. Diarra, Mali, 2009 [14]

138/10 year

13.8 case/an

P = 0.883450

Nuhu, 2010, Nigeria [5]

48/5 year

9.6 case/an

P = 0.690339

Diallo, Mali, 2009 [9]

71/6 year

11.8 case/an

P = 0.772631

Our study, Mali, 2017

54/4 year

13.5 case/an