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Table 1 Mosquito taxa collected in the Danube Delta Biosphere Reserve (Romania) in 2014 with information on the number of screened mosquito specimens, tested pools, Dirofilaria spp. screening results and estimated infection rates (EIR) per 100 mosquito specimens with corresponding 95% confidence intervals (95% CI)

From: Circulation of Dirofilaria immitis and Dirofilaria repens in the Danube Delta Biosphere Reserve, Romania

Mosquito species No. of tested mosquito specimens No. of tested mosquito pools No. of mosquito pools positive for Dirofilaria spp. (% of tested pools) No. of mosquito pools positive for D. immitis (% of tested pools) EIR Dirofilaria immitis (95% CI) No. of mosquito pools positive for D. immitis and D. repens (% of tested pools) EIR D. repens (95% CI)
Coquillettidia richiardii 98,276 552 22 (3.99) 20 (3.62) 0.021 (0.013–0.032) 4 (0.72) 0.004 (0.001–0.010)
Anopheles hyrcanus 82,073 484 24 (4.96) 22 (4.55) 0.028 (0.018–0.041) 5 (1.03) 0.006 (0.002–0.014)
Culex pipiens (s.l.)/Cx. torrentium 18,421 217 9 (4.15) 9 (4.15) 0.051 (0.025–0.093) 0 (0.00) 0 (0.000–0.020)
Aedes caspius 13,729 197 9 (4.57) 7 (3.55) 0.053 (0.023–0.104) 3 (1.52) 0.022 (0.006–0.060)
Culex modestus 9534 166 0 (0.00) 0 (0.00) 0 (0.000–0.039) 0 (0.00) 0 (0.000–0.039)
Anopheles maculipennis (s.l.) 9380 207 20 (9.66) 17 (8.21) 0.206 (0.125–0.325) 6 (2.90) 0.066 (0.027–0.137)
Aedes vexans 7295 155 8 (5.16) 5 (3.23) 0.073 (0.027–0.164) 4 (2.58) 0.056 (0.018–0.134)
unidentified 1041 75 2 (2.67) 2 (2.67) 0.183 (0.036–0.576) 0 (0.00) 0 (0.000–0.315)
Anopheles algeriensis 697 34 1 (2.94) 1 (2.94) 0.126 (0.009–0.600) 0 (0.00) 0 (0.000–0.398)
Aedes spp. 71 12 1 (8.33) 0 (0.00) 0 (0.000–3.570) 1 (8.33) 1.263 (0.086–6.023)
Aedes detritus 31 5 0 (0.00) 0 (0.00) 0 (0.000–7.890) 0 (0.00) 0 (0.000–7.890)
Culex spp. 10 7 0 (0.00) 0 (0.00) 0 (0.000–25.441) 0 (0.00) 0 (0.000–25.441)
Aedes flavescens 5 2 0 (0.00) 0 (0.00) 0 (0.000–31.926) 0 (0.00) 0 (0.000–31.926)
Aedes cinereus 4 2 0 (0.00) 0 (0.00) 0 (0.000–39.179) 0 (0.00) 0 (0.000–39.179)
Aedes hungaricus 3 1 0 (0.00) 0 (0.00) 0 (0.000–40.888) 0 (0.00) 0 (0.000–40.888)
Culiseta annulata 1 1 0 (0.00) 0 (0.00) 0 (0.000–79.345) 0 (0.00) 0 (0.000–79.345)
Uranotaenia unguiculata 1 1 0 (0.00) 0 (0.00) 0 (0.000–79.345) 0 (0.00) 0 (0.000–79.345)
Sum resp. EIR (% of tested mosquito pools or 95% CI) 240,572 2118 96 (4.53) 83 (3.92) 0.036 (0.029–0.044) 23 (1.09) 0.010 (0.006–0.014)