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Table 4 Flavivirus specific antibody levels in foals born to vaccinated mares and vaccinated at 36–83 days of age, followed by booster vaccinations four weeks and approximately one year later

From: Safety and immunogenicity of a delta inulin-adjuvanted inactivated Japanese encephalitis virus vaccine in pregnant mares and foals

Time point

JEV neutralizing

MVEV neutralizing

WNVKUNneutralizing

 

Positive/total

Mean titre≠

Titre range

Positive/total

Mean titre≠

Titre range

Positive/total

Mean titre≠

Titre range

Pre-suckle

0/11

--

--

0/11

--

--

0/11

--

--

Post suckle

10/11

46

< 20-80

8/11

30

< 20-40

3/11

93

< 20-160

Age 13–49 days

3/10*

26

< 20-40

1/10*

40

< 20-40

2/10*

30

< 20-40

Vaccination

3/11

20

< 20-20

2/11

20

< 20-20

1/11

40

< 20-40

Age 36–83 days

Booster 4 weeks post vaccination

2/11

20

< 20-20

3/11

20

< 20-20

2/11

20

< 20-20

Age 64–111 days

4 weeks post booster

10/11

88

< 20-320

10/11

30

< 20-40

1/11

20

< 20-20

Age 93–140 days

7 weeks post booster

3/11

53

< 20-80

6/11

26

< 20-40

3/11

20

< 20-20

Age 114–161 days

10 weeks post booster

5/11

24

< 20-40

0/11

-

< 20

1/11

20

< 20-20

Age 137–184 days

~9 months post 1 st boost (2 nd boost)

0/11

--

< 20

0/11

--

< 20

0/11

--

< 20

Age 332–379 days

2 weeks post 2 nd boost

11/11

> 902

160- > 2560

10/11

50

< 20-80

1/11

20

< 20-20

Age 346–393 days

5.5 weeks post 2 nd boost

11/11

465

160-1280

7/11

17

< 20-40

0/11

-

< 20

Age 370–417 days

14 weeks post 2 nd boost

8/11

150

< 20-640

0/11

-

< 20

9/11

31

< 20-80

Age 454-501

20 weeks post 2 nd boost

7/11

63

< 20-160

0/11

-

< 20

0/11

-

< 20

Age 498–545 days

  1. *one foal not yet born at this sampling point.
  2. ≠mean of titres ≥ 20.
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Veterinary Research

ISSN: 1297-9716