A Study on Epidemic Strains of Dysenteric Bacilli Isolated in Summer, 1955. (1st Report)
1956 Volume 8 Issue 1 Pages 46-50
Details
1956 Volume 8 Issue 1 Pages 46-50
Mizuno has been studying Shigella strains isolated from patients in the Moriguchi-district near Osaka-City 1953.
In her studies a yearly variation is observed in distribution of epidemic groups and types Shigella strains in the district.
The past 3 years have not demonstrated Shigella A and C groups.
An apparent decrease in the incidence of dysentery of B group (1953-93.6%,1954-89.3%,1955-66.7%) was remarkably contrasted with an increase in Shigella D group (1953-6.4%, '54-10.7%, '55-33.3%).
The change of the distribution patterns of subtypes of Shigella B group in this district is shown as follows:
The distribution pattern of Shigella in Osaka prefecture and the averaged pattern of throughout Japan are shown as follows: (Table 2 and 3)
These three tables show that there is a marked difference with one another and through there patterns a tendency is observed that the distribution patterns of the types of epidemic Shigella strains in the Moriguchi-district gradually approach those of all Japan.
