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Table 4 Evidence for vertical transmission and genotype identity of B. microti in embryos isolated from female voles in 2013 and 2014

From: Prevalence, genetic identity and vertical transmission of Babesia microti in three naturally infected species of vole, Microtus spp. (Cricetidae)

ID of pregnant female

Host species

No. of embryos in litter

No. of embryos infected with B. microti in the litter

% of infected embryos

B. microti genotype

In positive female

In embryos (no. of genotyped embryos)

2013/3

M. arvalis

7

7

100

IRU 1

IRU 1 (3)

2013/15

M. arvalis

4

4

100

IRU 1

IRU 2 (3)

2013/20

M. arvalis

5

5

100

IRU 1

IRU 2 (2)

2013/21

M. arvalis

6

6

100

IRU 1

IRU 2 (3)

2013/24

M. agrestis

7

0

0

IRU 1

nd

2013/37

M. arvalis

5

5

100

IRU 1

IRU 2 (2)

2013/41

M. arvalis

6

6

100

nd

IRU 2 (3)

2013/47

M. arvalis

2

2

100

IRU 1

IRU 1 (1)

2013/52

M. arvalis

6

6

100

IRU 2

IRU 1 (1) and IRU 2 (2)

2013/53

M. arvalis

6

6

100

nd

IRU 2 (1)

2013/63

M. oeconomus

5

5

100

IRU 2

IRU 2 (1)

2013/72

M. arvalis

6

6

100

IRU 1

IRU 1 (2)

2014/44

M. oeconomus

6

0

0

IRU 1

nd

2014/155

M. arvalis

4

3

75

nd

IRU 2 (3)

Total

 

75

61(81.3%)

Litters positive 12/14 (85.7%)

9 × IRU 1; 2 × IRU 2

7 × IRU 1; 20 × IRU 2

  1. Abbreviation: nd not done