[Outbreak case caused by different colicin type of Shigella sonnei in a day nursery in Tokyo (1998)].
From October through December, 1998, person to person infection caused by Shigella sonnei had occurred in the day nursery in Hachioji-city Tokyo, and a total of 41 patients including 3 suspected cases and 3 carriers had been confirmed. Although one case was imported case which is one-year-old kindergarten child, the remaining was domestic case. Of patients, 33 cases (80.5%) were a three-year-old kindergarten children and their families, accounting for 20 and 13 cases, respectively. From the data of symptom onset of patients, epidemic could distinguish to the former part and the later part. The recur or reinfection, and re-detection case was observed in the later part. Clinical symptom of the patients was diarrhea (100%), fever (80%) and abdominal cramps (70%), and LVFX for adult or FOM for child was used for the therapy. In the colicin typing test and the antibiotic susceptibility test for 9 reagents, almost isolates in the former part were type 0 and susceptible, and MBC for FOM ranged from 6.25 to 100 micrograms/ml, whereas those in the later part was type 2 and resistant for the TC, and showed highly MBC for FOM with 50 or 100 micrograms/ml. However, both isolates showed same patterns in plasmid profiles and DNA fingerprints by RAPD analysis. On the other hand, the strain from imported case was also colicin 0, but it was different as regards resistant for ABPC and ST and two genetic analysis.
Yamada
S
S
Tama Branch Laboratory, Tokyo Metropolitan Research Laboratory of Public Health.
Ogata
K
K
Kato
R
R
Morimoto
K
K
Hayashi
Y
Y
Ito
T
T
Matushita
S
S
Konishi
N
N
Kai
A
A
Endoh
M
M
D000328:Adult; D002656:Child Day Care Centers; D002675:Child, Preschool; D003087:Colicins; D004196:Disease Outbreaks; D004405:Dysentery, Bacillary / Q000453:epidemiology* / Q000382:microbiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012764:Shigella sonnei / Q000145:classification*; D014041:Tokyo / Q000453:epidemiology
D003087:Colicins