Streptococcus suis
Phylum Firmicutes
Class Bacilli
Order Lactobacillales
Family Streptococcaceae
Genus Streptococcus
Species S. suis
  • Meningitis, arthritis, septicaemia and pneumonia of pigs
  • Sporadic cases of endocarditis, neonatal deaths and abortion
  • Carried in tonsils and nasal cavity of carrier pigs
  • Outbreaks occur in intensively-reared herds with poor hygiene
  • Carrier sows infect litters causing neonatal deaths
  • Meningitis with fever, tremors, incoordination, opisthotonos and convulsions
  • Treatment with penicillin; prophylactic long-acting penicillin for sows and piglets
  • Suppurative conditions in cattle, sheep, horses, cats
  • Septicaemia and meningitis in humans

Streptococcus & Enterococcus Infections - Pigs