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Table 2 Virus, clinical signs, virus replication, transmission and seroconversion of guinea pigs

From: Identification of swine influenza A virus and Stenotrophomonas maltophilia co-infection in Chinese pigs

Inoculum Inoculated guinea pigs Contact guinea pigs Transmission
Clinical signs Peak mean nasal wash titer ± SD (day)** Seroconversion (HI titer range)*** Virus detected in nasal wash**** Seroconversion (HI titer range)
Swine influenza virus (SIV) None 5.50 ± 0.6 (2) 3/3*(40) 0/3 0/3 None
SIV + S. maltophilia Depression 6.25 ± 0.4 (2) 3/3 (40–80) 0/3 0/3 None
  1. *Number of positive guinea pigs/total number; **Peak nasal wash titers are expressed as the mean log10EID50/mL ± SD; ***Serum was collected on day 14 p.i. for the virus inoculated group and on day 21 p.i. for the contact group, and homologous strains were used to detect SIV seroconversion with chicken red blood cells in hemagglutination inhibition assays. ****The lower limit of detection was 101.5 EID50/mL.