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Table 1 Aedes albopictus and Anopheles quadrimaculatus infection rates, dissemination rates, and transmission rates after exposure to Mayaro virus

From: Transmission potential of Mayaro virus by Aedes albopictus, and Anopheles quadrimaculatus from the USA

Mosquito species

Replicate

Blood meal titer (log10 PFU/ml)

7 dpi

14 dpi

N tested

Infection rate, N (%)

Dissemination rate, N (%)

Dissemination efficiency, N (%)

Transmission rate, N (%)

Transmission efficiency, N (%)

N tested

Infection rate, N (%)

Dissemination rate, N (%)

Dissemination efficiency, N (%)

Transmission rate, N (%)

Transmission efficiency, N (%)

Ae. albopictus

1

8.23

30

30 (100.0)

29 (96.67)

29 (96.67)

13 (44.82)

13 (43.33)

30

30 (100.0)

30 (100.0)

30 (100.0)

24 (80.0)

24 (80.0)

2

8.14

30

30 (100.0)

30 (100.0)

30 (100.0)

10 (33.33)

10 (33.33)

30

30 (100.0)

30 (100.0)

30 (100.0)

21 (70.0)

21 (70.0)

3

7.97

30

30 (100.0)

27 (90.0)

27 (90.0)

9 (33.33)

9 (30.00)

30

30 (100.0)

30 (100.0)

30 (100.0)

13 (43.33)

13 (43.33)

Mean ± SD

NA

30

100.0

95.56 ± 5.09

95.56 ± 5.09

37.16 ± 6.63

35.55 ± 6.94

30

100.0

100.0

100.0

64.44 ± 18.96

64.44 ± 18.96

An. quadrimaculatus

1

8.06

30

25 (83.33)

19 (76.0)

19 (63.33)

8 (42.11)

8 (26.66)

30

21 (70.00)

16 (76.19)

16 (53.33)

7 (43.75)

7 (23.33)

2

7.87

30

25 (83.33)

8 (32.0)

8 (26.67)

0 (0.0)

0 (0.0)

30

19 (63.33)

7 (36.84)

7 (23.33)

4 (57.14)

4 (13.33)

3

8.39

30

24 (80.0)

18 (75.0)

18 (60.0)

6 (33.33)

6 (20.0)

30

27 (90.00)

18 (66.67)

18 (60.00)

8 (44.44)

8 (26.67)

Mean ± SD

NA

30

82.22 ± 1.92

61.0 ± 2 5.12

50.0 ± 20.27

25.15 ± 22.22

15.55 ± 13.88

30

74.44 ± 13.88

59.9 ± 20.53

45.55 ± 19.53

48.44 ± 7.54

21.11 ± 6.94

  1. We used the infection rates, dissemination rates, and transmission rates for comparison within mosquito species. A significant difference within mosquito species was only observed for Ae. albopictus transmission [P < 0.0001, odds ratio (OR) 0.3269, 95% conficence interval (CI) 0.1769–0.6043]. Significant differences were observed between Ae. albopictus and An. quadrimaculatus infection rates (P < 0.0001, OR 38.7, 95% CI 2.281–656.8 and P < 0.0001, OR 61.45, 95% CI 3.665–1030 , at 7 dpi and 14 dpi, respectively) and dissemination efficiencies at both time points (P < 0.0001, OR 21.5, 95% CI 7.27–63.58 and P < 0.0001, OR 213.9, 95% CI 12.88–3554, at 7 dpi and 14 dpi, respectively). Between species, the transmission efficiencies were significantly different at both time points (P < 0.0017, OR 2.995, 95% CI 1.465–6.122 at 7 dpi and P < 0.0001, OR 6.773, 95% CI 3.482–13.17 at 14 dpi)
  2. dpi, Days post-infection; NA, not applicable, PFU, plaque-forming units; SD standard deviation