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Table2 Number of samples analyzed and viruses detected in isolates resulting from environmental surveillance conducted in Yaounde and Douala between January 2016 and December 2017

From: Detection and characterization of polioviruses originating from urban sewage in Yaounde and Douala, Cameroon 2016–2017

Cities and sampling sites 2016 2017 Total 2016–2017
n SL1 SL2 SL3 NPEV All PVs n SL1 SL2 SL3 NPEV All PVs n All PVs (%)
Yaounde
Aurore 26     3 0 2      0 28 0 (0.0)
Maetur Mendong 18 1 2 1 6 4 17     5 0 35 4 (11.4)
Melen Elobi 15    1 3 1 21 1    3 1 36 2 (5.6)
Mokolo Market 23    1 5 1 23     8 0 46 1 (2.2)
Mvog-Ada 25 1 1   9 2 24    2 9 2 49 4 (8.2)
Nkolndongo 11      0 25 1   1 8 2 36 2 (5.6)
Nkomkana 24 2 3 1 11 6 20 2   2 5 4 44 10 (22.7)
Sports Palace 26     8 0 25    3 12 3 51 3 (5.9)
Total Yaounde 168 4 6 4 45 14 157 4 0 8 50 12 325 26 (8.0)
Douala
Cité des Palmiers 25 2 2 1 6 5 24    1 7 1 49 6 (12.2)
Behind Jet Hotel 14    1 3 1 24     7 0 38 1 (2.6)
Pamplemousse Drain 25   1   10 1 26    2 9 2 51 3 (5.9)
Camp Yabassi Bridge 25 1 2 2 7 5 29    2 8 2 54 7 (13.0)
Total Douala 89 3 5 4 26 12 103 0 0 5 31 5 192 17 (8.9)
Total general 257 7 11 8 71 26 260 4 0 13 81 17 517 43 (8.3)
  1. For clarity, values equal to zero (0) have been omitted; except those in the raws corresponding to sub-totals and totals that are highlighted in italic