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Table 3 Distribution of HP-PRRSV in 9 organs at different times after inoculation

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

Designation Day brain tonsil Lymph node heart liver spleen lung kidney stomach
PRRSV 7 0/4 4/4 4/4 2/4 1/4 2/4 4/4 1/4 0/4
  13-14* 0/4 4/4 4/4 3/4 0/4 4/4 4/4 3/4 0/4
  21 0/3 2/3 3/3 2/3 1/3 0/3 3/3 1/3 0/3
  28 1/3 3/3 3/3 3/3 3/3 0/3 3/3 3/3 0/3
PRRSV+SS7 10-15** 4/8 8/8 8/8 7/8 5/8 6/8 8/8 7/8 2/8
  28 0/2 1/2 2/2 0/2 0/2 1/2 2/2 1/2 0/2
  1. *: One pig died on day 13 and the remaining 3 pigs were necropsied on day 14.
  2. **: Eight pigs in the coinfected group died due to acute illness between days 10 and 15 after WC0711 inoculation, and the remaining 2 were necropsied on day 28.