| Authors | Annual Frequency |
| OMAR BERRADA (March 2022) [7] | 17 cas/11: 1.54 |
| J. MILOUNDJA (2007 au Gabon) [3] | 16 cas/15: 1.07 |
| RAFANOMEZANTSOA T Malgache 2020 [11] | 1 cas |
| KEITA A [10] en 2022 | 2 cas/7: 0.28 |
| T. BENTEBBICHE (Tunisie en 2020) [6] | 16 cas/5: 3.2 |
| OUR STUDY | 13 cas/7: 1.86 |