The main source of Streptococcus suis is pig across the world.It can be spread from sick or carrier pig to human who has a close contact with it.The organism causes meningitis, septicaemia, endocarditis, arthritis, and septic shock in both hosts and mortality is high. REF: [url=http://www.thelancet.com/journals]http://www.thelancet.com/journals[/url]