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Table 3 Cross-protection experiment

From: The Riemerella anatipestifer M949_RS01035 gene is involved in bacterial lipopolysaccharide biosynthesis

Immunization

Challenge strainsa

Protection rate (%)b

Geomean of three protection rates (%)

SD of three protection rates

Inactivated RA1062 vaccine

WJ4

100.0; 100.0; 100.0

100.00

0.00

Yb2

87.5; 75.0; 75.0

78.95

7.22

HXb2

100.0; 100.0; 100.0

100.00

0.00

Inactivated CH3 vaccine

WJ4

87.5; 100.0; 100.0

95.65

7.22

Yb2

25.0; 25.0; 25.0

25.00

0.00

HXb2

50.0; 50.0; 50.0

50.00

0.00

Non-vaccinated

WJ4

0; 0; 0

0.00

0.00

Yb2

0; 0; 0

0.00

0.00

HXb2

0; 0; 0

0.00

0.00

  1. aChallenge dose was 10 LD50 for each strain.
  2. bThe protection rate was calculated as follows: [1 − (no. of dead ducks per group/total no. of ducks per group)] × 100. The protection rates for three experimental repeats were shown in the table and separated with semicolon.