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Table 4 Viruses isolated in mosquito females and minimum field infection rates by month, Barkedji area, 2012-2013

From: Arboviruses isolated from the Barkedji mosquito-based surveillance system, 2012-2013

Virus   July September October November December
Species No NP P+ MFIR No NP P+ MFIR No NP P+ MFIR No NP P+ MFIR No NP P+ MFIR
WNV Aedes dalzieli 367 52 0 0.0 108 46 0 0.0 7 6 1 142.9 0 0 0 0.0 0 0 0 0.0
Anopheles rufipes 1 1 0 0.0 33 9 0 0.0 61 10 1 16.4 8 6 0 0.0 8 6 0 0.0
Culex antennatus 46 15 0 0.0 176 77 0 0.0 990 71 2 2.0 96 35 1 10.4 0 0 0 0.0
Culex neavei 12 6 0 0.0 669 97 3 4.5 1193 78 6 5.0 1721 128 13 7.6 104 25 0 0.0
Culex perfuscus 155 16 1 6.5 222 64 0 0.0 64 21 0 0.0 0 0 0 0.0 0 0 0 0.0
Culex poicilipes 19 6 0 0.0 3168 149 0 0.0 2401 114 1 0.4 1974 113 0 0.0 4 4 0 0.0
Culex quinquefasciatus 4 2 1 250.0 13 6 0 0.0 23 3 0 0.0 20 5 0 0.0 20 5 0 0.0
Culex tritaeniorhynchus 842 48 0 0.0 98 40 0 0.0 343 47 1 2.9 14 12 0 0.0 0 0 0 0.0
Total vectors 1446 146 2 1.4 4487 488 3 0.7 5082 350 12 2.4 3833 299 14 3.7 136 40 0 0.0
USUV Culex antennatus 46 15 0 0.0 176 77 0 0.0 990 71 1 1.0 96 35 1 10.4 0 0 0 0.0
Culex neavei 12 6 0 0.0 669 97 3 4.5 1193 78 2 1.7 1721 128 4 2.3 104 25 0 0.0
Total vectors 58 21 0 0.0 845 174 3 3.6 2183 149 3 1.4 1817 163 5 2.8 104 25 0 0.0
ACAV Culex antennatus 46 15 0 0.0 176 77 0 0.0 990 71 0 0.0 96 35 1 10.4 0 0 0 0.0
Culex neavei 12 6 0 0.0 669 97 0 0.0 1193 78 1 0.8 1721 128 4 2.3 104 25 0 0.0
Mansonia africana 0 0 0 0.0 64 30 0 0.0 76 17 0 0.0 256 31 0 0.0 263 20 1 3.8
Total vectors 58 21 0 0.0 909 204 0 0.0 2259 166 1 0.5 2073 194 5 2.8 367 45 1 2.7
BAGV Culex antennatus 46 15 0 0.0 176 77 0 0.0 990 71 1 1.0 96 35 0 0.0 0 0 0 0.0
Culex neavei 12 6 0 0.0 669 97 0 0.0 1193 78 0 0.0 1721 128 2 1.2 104 25 0 0.0
Total vectors 58 21 0 0.0 845   0 0.0 2183 149 1 0.5 1817 163 2 1.1 104 25 0 0.0
BARV Aedes sudanensis 15 8 0 0.0 517 103 1 1.9 111 36 0 0.0 2 2 0 0.0 0 0 0 0.0
Culex neavei 12 6 0 0.0 669 97 2 3.0 1193 78 4 3.4 1721 128 10 5.8 104 25 0 0.0
Total vectors 27 14 0 0.0 1186 200 3 2.5 1304 114 4 0.0 1723 130 10 0.0 104 25 0 0.0
NDUV Aedes dalzieli 367 52 0 0.0 108 46 0 0.0 7 6 1 142.9 0 0 0 0.0 0 0 0 0.0
Aedes vexans 6603 187 0 0.0 1408 102 0 0.0 278 44 1 3.6 4 4 0 0.0 0 0 0 0.0
Anopheles rufipes 1 1 0 0.0 33 9 0 0.0 61 10 1 16.4 8 6 0 0.0 8 6 0 0.0
Anopheles ziemanni 6 6 0 0.0 1879 129 1 0.5 434 44 0 0.0 62 33 0 0.0 10 8 0 0.0
Culex antennatus 46 15 0 0.0 176 77 0 0.0 990 71 0 0.0 96 35 0 0.0 0 0 0 0.0
Culex poicilipes 19 6 0 0.0 3168 149 0 0.0 2401 114 1 0.4 1974 113 0 0.0 4 4 0 0.0
Mansonia uniformis 0 0 0 0.0 2277 142 3 1.3 864 70 0 0.0 127 30 0 0.0 2 2 0 0.0
Total vectors 7042 267 0 0.0 9049 654 4 0.4 5035 359 4 1.0 2271 221 0 0.0 24 20 0 0.0
SANV Culex antennatus 46 15 0 0.0 176 77 0 0.0 990 71 0 0.0 96 35 1 10.4 0 0 0 0.0
Culex neavei 12 6 0 0.0 669 97 0 0.0 1193 78 0 0.0 1721 128 4 2.3 104 25 0 0.0
Mansonia africana 0 0 0 0.0 64 30 0 0.0 76 17 0 0.0 256 31 0 0.0 263 20 1 3.8
  Total vectors 58 21 0 0.0 909 204 0 0.0 2259 166 0 0.0 2073 194 5 2.8 367 45 1 2.7
SINV Culex antennatus 46 15 0 0.0 176 77 0 0.0 990 71 0 0.0 96 35 1 10.4 0 0 0 0.0
Culex neavei 12 6 0 0.0 669 97 1 1.5 1193 78 5 4.2 1721 128 6 3.5 104 25 0 0.0
Total vectors 58 21 0 0.0 845 174 1 1.2 2183 149 5 2.3 1817 163 7 3.9 104 25 0 0.0
RVFV Aedes ochraceus 83 17 0 0.0 1250 110 1 0.8 516 53 0 0.0 5 4 0 0.0 0 0 0 0.0
YAOV Culex tritaeniorhynchus 842 48 1 1.2 98 40 0 0.0 343 47 0 0.0 14 12 0 0.0 0 0 0 0.0
  1. No: Number of female mosquitoes collected; NP: Number of pools; P+: number of positive pools; MFIR: minimum field infection rate (total number positive pools / the total number of mosquitoes tested *1000)