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Table 1 Neutralizing antibody titers in ducklings immunized with DEV DNA vaccines

From: Attenuated Salmonella typhimurium delivering DNA vaccine encoding duck enteritis virus UL24 induced systemic and mucosal immune responses and conferred good protection against challenge

Weeks post-immunization

Vaccinated groups

Control groups

 

A

B

C

D

E

F

1

1:141.57

1:98.89

1:79.25

1:35.50

-

-

2

1:142.57

1:100.47

1:82.56

1:37.58

-

-

3

1:142.60

1:102.75

1:83.41

1:38.10

-

-

4

1:146.50

1:104.20

1:86.64

1:42.23

-

-

5

1:149.60

1:110.40

1:89.13

1:44.70

1:3.16

-

6

1:148.49

1:108.14

1:89.13

1:44.67

1:3.55

-

8

1:146.80

1:106.00

1:87.40

1:42.64

1:3.27

-

  1. Data represent mean neutralizing antibody titer from 3 serum samples.
  2. -, no neutralizing antibody response was detected.