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Table 2 Respiratory disease scores and clinical signs

From: Secondary infection with Streptococcus suis serotype 7 increases the virulence of highly pathogenic porcine reproductive and respiratory syndrome virus in pigs

Group no.(n) Designation Respiratory disease scores CNS disease Diarrhea Athrepsy Bacteremia Viremia
1(8) Control 0.0 ± 0.0a 0/8a 0/8a 0/8a 0/8a 0/8a
2(12) PRRSV 1.8 ± 0.3b 4/12b 5/12b 11/12b   12/12b
3(10) SS7 1.0 ± 0.2c 0/10a 7/10b 0/10a 0/10a  
4(12) PRRSV+SS7 2.1 ± 0.4b 0/2,8/10c 0/2,7/10b 0/2,10/10b 10/10b 12/12b
  1. a, b, c, Values with different superscripts are significantly different (P < 0.05) as determined by Fisher's exact test.