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. 2016 Sep 7;95(3):633–638. doi: 10.4269/ajtmh.15-0878

Table 4.

Arbovirus detection in mosquitoes trapped in May 2010 in Far North Queensland uplands using field deployable PCR methods

Laboratory no. Date of collection Date of testing Description Trap no. Mosquito species in pool No. of insects tested Real-time PCR
BFV KUNV MVEV RRV
1 May 14 May 17 Base camp vicinity 3 Mixed culicines 5 BFV 39* NA NA NA
2 May 15 May 17 Airstrip 5 Culex annulirostris 12 Neg NA NA NA
3 May 15 May 17 Camp area 6 Mixed 10 BFV NA NA NA
4 May 15 May 17 Camp area 6 Cx. annulirostris 5 BFV NA NA NA
5 May 15 May 17 Creek junction 7 Culex quinquefasciatus 12 BFV NA NA NA
6 May 15 May 17 Creek junction 7 Mixed culicines including Aedes 7 BFV 36 NA NA NA
7 May 15 May 17 Creek junction 7 Cx. annulirostris 20 BFV 38 NA NA NA
8 May 16 May 17 Homestead 9 Mixed mosquitoes 18 BFV 39 NA NA NA
9 May 16 May 17 Homestead 9 Cx. annulirostris 20 BFV 39 NA NA NA
10 May 15 May 17 Range control buildings 8 Mixed culicines 6 Neg NA NA NA
11 May 16 May 17 Creek 11 Mixed culicines 6 Neg NA NA NA
12 May 16 May 17 Creek 11 Cx. annulirostris 12 Neg NA NA NA
13 May 16 May 17 Creek 12 Cx. annulirostris 10 BFV NA NA NA
14 May 16 May 17 Creek 12 Mixed mosquito spp. 9 Neg NA NA NA
15 May 14 May 17 Creek base camp vicinity 2 Cx. annulirostris 10 Neg NA NA NA
16 May 14 May 17 Case camp vicinity 2 Mixed Aedes spp. 6 BFV 38 NA NA NA
17 May 16 May 17 10 Cx. annulirostris 12 Neg NA NA NA
18 May 17 May 17 Non-template control NTC Neg NA NA NA
19 May 17 May 17 Control tower 13 Cx. annulirostris 5 NA§ Neg Neg Neg
20 May 17 May 17 Hut 15 Cx. annulirostris 12 NA§ Neg Neg Neg
21 May 17 May 17 Airfield 5 Anopheles annulipes 14 NA§ Neg Neg Neg
22 May 14 May 17 Base camp vicinity 2 An. annulipes 9 NA§ Neg Neg RRV
23 May 14 May 17 Woodland 4 An. annulipes 2 NA§ Neg Neg Neg
24 May 16 May 17 Camp site 10 Cx. annulirostris 25 NA§ Neg Neg Neg
25 May 17 May 17 Hut 15 Aedes linneatipennis 13 NA§ Neg Neg Neg
26 May 17 May 17 Control tower 13 Aedes tremulus 17 NA§ Neg Neg Neg
27 May 18 May 18 Buildings 16 Cx. annulirostris 4 NA§ Neg MVEV 37 RRV 34
28 May 18 May 18 Buildings 16 An. annulipes 7 NA§ Neg MVEV 26 Neg
29 May 18 May 18 Camp site 17 Cx. annulirostris 11 NA§ Neg MVEV 33 Neg
30 May 18 May 18 Creek 18 Cx. annulirostris 3 BFV 16 Neg MVEV 36 RRV 37
31 May 18 May 18 Creek 18 Culex bitaeniorhynchus 10 BFV 17 Neg MVEV 33 RRV 34
32 May 18 May 18 Creek 18 Coquillettidia xanthogaster 20 BFV 17 Neg MVEV 34 RRV 36
33 May 18 May 18 Camp site 19 Cx. annulirostris 9 NA§ Neg MVEV 30 RRV 32

BFV = Barmah Forest virus; KUNV = Kunjin virus; MVEV = Murray Valley Encephalitis virus; NA = not applicable; Neg = negative; PCR = polymerase chain reaction; RRV = Ross River Virus.

*

Positive qPCR assay results expressed as cycling threshold (Ct) values when < 40.0, and negative when Ct ≥ 40.0.

Traps per arbovirus were BFV = 16, KUNV = 10, MVEV = 10, and RRV = 10. Trap numbers correspond to numbered boxes in Figure 1.

Limited analysis of tested mosquito extracts for only BFV due to expected low sensitivity of testing small numbers of trapped insects (below preferred minimum aliquot of 25 insects).

§

Exhaustion of BFV PCR master mix prevented analysis of all second series of mosquito pools.