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Table 2 Mean (±SD) viral load in nasal swabs after challenge and percentage of shedder pigs

From: Immune response development after vaccination of 1-day-old naïve pigs with a Porcine Reproductive and Respiratory Syndrome 1-based modified live virus vaccine

 

Treatment

Day of study

125/DC-1

129/DC + 3

132/DC + 6

134/DC + 8

136/DC + 10

Viral load

% shedder pigs

Viral load

% shedder pigs

Viral load

% shedder pigs

Viral load

% shedder pigs

Viral load

% shedder pigs

Mean PRRSV viral load

T01

ND

0%

5.56 ± 0.7

100%

4.53 ± 0.5

100%

2.07 ± 0.3

20%

2.10 ± 0.4

20%

T02

ND

0%

2.21 ± 0.6

12.5%

2.64 ± 0.4

37.5%

ND

0%

2.03 ± 0.3

25%

T03

ND

0%

3.72 ± 0.6

62.5%

3.19 ± 0.4

62.5%

2.06 ± 0.2

25%

2.52 ± 0.3

37.5%

 

Contrast

P value

T01 vs T02

  

0.0019

0.0047

0.0119

NS

NS

NS

NS

NS

T01 vs T03

  

NS

NS

NS

NS

NS

NS

NS

NS

T02 vs T03

  

NS

NS

NS

NS

NS

NS

NS

NS

  1. Values are expressed as log10 PRRSV RNA copies per mL. DC day of challenge, ND non-detectable (below limit of detection of the technique), NS non-significant
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Porcine Health Management

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