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Table 1 Virus isolation results from the serum samples of piglets inoculated with the rescued viruses

From: ORF1a of highly pathogenic PRRS attenuated vaccine virus plays a key role in neutralizing antibody induction in piglets and virus neutralization in vitro

Groups

Pig no.

Weeks post-inoculation

0

1

2

3

4

5

6

7

8

9

10

rHuN4-F112 inoculated group

#11

-a

+b

+

+

#12

+

+

#13

+

+

+

#14

+

+

#15

+

+

#16

+

+

+

rHuN4-F112-C1a inoculated group

#21

+

#22

#23

#24

+

rHuN4-F112-C1b inoculated group

#31

+

#32

#33

rHuN4-F112-C27 inoculated group

#41

#42

+

#43

#44

rCH-1R inoculated group

#51

#52

#53

rCH-1R-H1a inoculated group

#61

+

+

+

#62

#63

rCH-1R-H1b inoculated group

#71

#72

+

#73

rCH-1R-H27 inoculated group

#81

#82

#83

Control group

#91

#92

#93

#94

  1. a “-” indicates that the virus was not isolated in the serum sample
  2. b “+” indicates that the virus was isolated in the serum sample