The carriage of Streptococcus suis type 2 by pigs in Papua New Guinea.
An indirect fluorescent antibody test was used to detect the presence of Streptococcus suis type 2 in nasal and pharyngeal swabs taken from pigs in Papua New Guinea. The rate of carriage for the two sites in domesticated indigenous village pigs was 0.5 and 2.5% respectively, compared to 39 and 43% for intensively reared pigs. These findings were supported by the results of a serological survey, using an enzyme linked immunosorbent assay, in which 87% of intensively reared pigs but only 8% of village pigs were seropositive to S. suis type 2. It is proposed that in intensive piggeries S. suis type 2 is continually cycled between pigs. In village pigs, the low population density and harsh environmental conditions prevents this cycle of infection.
Paterson
R A
RA
School of Veterinary Studies, Murdoch University, Perth, Australia.
Robertson
I D
ID
Sanders
R C
RC
Siba
P M
PM
Clegg
A
A
Hampson
D J
DJ
D000818:Animals; D002353:Carrier State / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D010219:Papua New Guinea / Q000453:epidemiology; D013290:Streptococcal Infections / Q000453:epidemiology / Q000662:veterinary*; D017011:Streptococcus suis / Q000302:isolation & purification*; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology* / Q000382:microbiology