Nationwide surveillance of salmonella in the faeces of pigs in Japan.
The prevalence of faecal carriage of salmonella in 5393 pigs reared on 218 pig farms located in 31 of 47 prefectures in Japan over the period July 2003 to June 2005 was investigated. We isolated 172 strains belonging to 20 serovars and one untypable Salmonella enterica from 169 pig faecal samples (3.1%) collected from 48 farms (22.0%). The most prevalent type of S. enterica was untypable O4,12:d:- which lacks phase 2 flagellar antigen, representing 29.1% (50/172) of all isolates. Of 26 S. enterica serovar Typhimurium isolates, 16 strains appeared to be definitive phage type 104 (DT104) by polymerase chain reaction.
Kishima
M
M
National Institute of Animal Health, Kannondai 3-1-5, Tsukuba, Ibaraki 305-0856, Japan. mkishima@affrc.go.jp
Uchida
I
I
Namimatsu
T
T
Osumi
T
T
Takahashi
S
S
Tanaka
K
K
Aoki
H
H
Matsuura
K
K
Yamamoto
K
K
D000818:Animals; D004197:Disease Reservoirs / Q000382:microbiology / Q000662:veterinary; D005243:Feces / Q000382:microbiology*; D005506:Food Contamination / Q000517:prevention & control; D006801:Humans; D007564:Japan; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D011159:Population Surveillance; D015995:Prevalence; D012307:Risk Factors; D012475:Salmonella / Q000145:classification / Q000302:isolation & purification*; D012478:Salmonella Food Poisoning / Q000453:epidemiology / Q000517:prevention & control; D012481:Salmonella Infections, Animal / Q000382:microbiology* / Q000635:transmission; D012703:Serotyping; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology* / Q000635:transmission; D015047:Zoonoses