Accession Number:

AD0684960

Title:

STUDIES ON LEPTOSPIROSIS IN THAILAND, WITH SPECIAL REFERENCE TO THE EPIDEMIOLOGY, PATHOLOGY AND CLINICAL ASPECTS, AND ITS RELATION TO THE ANIMAL RESERVOIR HOSTS

Descriptive Note:

Progress rept. no. 4 (Final), 1 Jan-31 Dec 1968

Corporate Author:

UNIVERSITY OF MEDICAL SCIENCES BANKOK (THAILAND) BANGKOK SCHOOL OF TROPICAL MEDICINE

Personal Author(s):

Report Date:

1969-02-14

Pagination or Media Count:

67.0

Abstract:

Epidemiological study of suspected cases of leptospirosis in 39 provincial hospitals in Thailand during January 1968 - December 1968 revealed 197 positives out of 1,377 cases 14.3. Common Serogroups were L. icterohemorrhagiae, L.autumnalis and L.wolffii. However, in Bangkok Hospitals leptospirosis bataviae was common. Annual variation of human leptospirosis in Thailand residual antibodies survey was studied for the third consecutive year and the results indicated that the incidence was slightly increased from 4 to be 6 and 9 respectively. Surveys of leptospiral antibodies in Umong Canton an epidemic area near Chiengmai Province revealed that the area was still considered to be an endemic area of leptospirosis. The correlation studies at Pitsanuloke Province enabled the author to find out an endemic area and revealed five leptospiral serogroups were prevalent in Pitsanuloke Province. The dried blood filter paper method was experimentally studied and the results revealed that it was reliable and practical for diagnosis of the disease in suspected cases from provincial areas. In animal experiments, L.javanica Bangkok L. icterohemorrhagiae Uttaradith and L.akiyami A Uthaidanee were all proved to be of high virulence to hamsters. There were at least 20 serotypes of pathogenic leptospirae so far discovered from Thailand and belong to 12 serogroups.

Subject Categories:

  • Medicine and Medical Research

Distribution Statement:

APPROVED FOR PUBLIC RELEASE