M. hyorhinis and M. hyosynoviae of pigs
- M. hyosynovia and M. hyorhinis produce syndromes similar to Glasser's disease with milder expression, rarely menigitis and arthritis
- M. hyorhinis causes a chronic progressive polyserositis in pigs under 10 weeks old
- A fever, laboured breathing, lameness and swollen joints occur
- Serofibrinous pleurisy, pericarditis and peritonitis occur
- Treatment includes tylosin and lincomycin
- M. hyorhinis causes a polyarthritis in pigs of 10-30 weeks old, leading to transient lameness
- Produce syndrome similar to Glasser's disease with milder expression
- Menigitis is rare
- Arthritis most consistent