Table 1 Number of virus types detected in the resulting isolates from environmental surveillance conducted in Yaounde and Douala between January 2016 and December 2017
Towns and sampling sites | 2016 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SL1 | SL1 + SL2 | SL2 | SL2 + SL3 | SL3 | NPEV + SL1 | NPEV + SL1 + SL2 | NPEV + SL1 + SL3 | NPEV + SL2 | NPEV + SL3 | NPEV | Negative samples | Positive samples | All samples | |
Yaounde | ||||||||||||||
Aurore | 3 | 23 | 3 | 26 | ||||||||||
Maetur Mendong | 1 | 1 | 6 | 10 | 8 | 18 | ||||||||
Melen Elobi | 1 | 3 | 11 | 4 | 15 | |||||||||
Mokolo Market | 1 | 4 | 18 | 5 | 23 | |||||||||
Mvog-Ada | 1 | 1 | 9 | 14 | 11 | 25 | ||||||||
Nkolndongo | 11 | 11 | ||||||||||||
Nkomkana | 1 | 1 | 1 | 1 | 8 | 12 | 12 | 24 | ||||||
Sports Palace | 8 | 18 | 8 | 26 | ||||||||||
Total Yaounde | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 41 | 117 | 51 | 168 | |
Douala | ||||||||||||||
Cité des Palmiers | 1 | 2 | 1 | 5 | 16 | 9 | 25 | |||||||
Derrière Jet Hotel | 1 | 3 | 10 | 4 | 14 | |||||||||
Pamplemousse Drain | 1 | 9 | 15 | 10 | 25 | |||||||||
Camp Yabassi Bridge | 1 | 1 | 1 | 1 | 5 | 15 | 9 | 25 | ||||||
Total Douala | 1 | 2 | 1 | 2 | 1 | 1 | 2 | 22 | 56 | 32 | 89 | |||
Total general | 2 | 1 | 3 | 3 | 3 | 2 | 1 | 1 | 3 | 1 | 63 | 173 | 83 | 257 |
Towns and sampling sites | 2017 | 2016–2017 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
SL1 | SL3 | NPEV + SL1 | NPEV + SL3 | NPEV | Negative samples | Positive samples | All samples | Positive samples | All samples | Positive samples (%) | |
Yaounde | |||||||||||
Aurore | 2 | 0 | 2 | 3 | 28 | 10.7 | |||||
Maetur Mendong | 5 | 12 | 5 | 17 | 13 | 35 | 37.1 | ||||
Melen Elobi | 1 | 3 | 17 | 4 | 21 | 8 | 36 | 22.2 | |||
Mokolo Market | 8 | 15 | 8 | 23 | 13 | 46 | 28.3 | ||||
Mvog-Ada | 1 | 1 | 8 | 14 | 10 | 24 | 21 | 49 | 42.9 | ||
Nkolndongo | 1 | 1 | 7 | 16 | 9 | 25 | 9 | 36 | 25.0 | ||
Nkomkana | 2 | 2 | 5 | 11 | 9 | 20 | 21 | 44 | 47.7 | ||
Sports Palace | 1 | 2 | 10 | 12 | 13 | 25 | 21 | 51 | 41.2 | ||
Total Yaounde | 3 | 5 | 1 | 3 | 46 | 99 | 58 | 157 | 109 | 325 | 33.5 |
Douala | |||||||||||
Cité des Palmiers | 1 | 6 | 17 | 7 | 24 | 16 | 49 | 32.7 | |||
Derrière Jet Hotel | 7 | 17 | 7 | 24 | 11 | 38 | 28.9 | ||||
Pamplemousse Drain | 2 | 7 | 17 | 9 | 26 | 19 | 51 | 37.3 | |||
Camp Yabassi Bridge | 1 | 1 | 7 | 20 | 9 | 29 | 18 | 54 | 33.3 | ||
Total Douala | 1 | 4 | 27 | 71 | 32 | 103 | 64 | 192 | 33.3 | ||
Total general | 3 | 6 | 1 | 7 | 73 | 170 | 90 | 260 | 173 | 517 | 33.5 |