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Table 1 Mortality and morbidity rates of each group

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 Pigs Deaths* Mortality Morbidity
   Number DPI   
1(8) Control 0   0%a 0%a
2(12) PRRSV 1 13 16.7%b 100%b
   1 21   
3(10) SS7 0   0%a 70%b
4(10) ** PRRSV+SS7 1 10 80%c 100%b
   2 12   
   3 13   
   2 15   
  1. *: Number of pigs and days post inoculation (DPI) when they were euthanized or died due to infection.
  2. **: Two pigs were necropsied on day 7 (when the pigs were not inoculated with SS7).
  3. a, b, c Values with different superscripts are significantly different (P < 0.05) as determined by Fisher's exact test.