| epidemiological studies on the background of the endemic occurrence of tsutsugamushi disease in toyama prefecture. i. epidemiology of infection with rickettsia tsutsugamuchi among field rodents in endemic and nonendemic areas. | in order to clarify the epidemiological background of the endemic occurrence of tsutsugamushi disease in toyama prefecture, japan, since 1978, comparative surveys have been carried out between endemic and nonendemic areas. rickettsia tsutsugamushi (rt) was isolated at a rate of about 36% (158/439) from field rodents in the endemic area while it was not isolated from any of 280 in nonendemic areas. in all of six stations in the endemic area, a significantly high proportion of rodents were found t ... | 1985 | 3934506 |
| epidemiological studies on the background of the endemic occurrence of tsutsugamushi disease in toyama prefecture. ii. anti-rickettsia tsutsugamushi antibody-positive rate in inhabitants of endemic and nonendemic areas. | with a view to clarifying the actual state of inapparent infection of tsutsugamushi diseases, inhibitants of endemic and nonendemic areas were screened for anti-rickettsia tsutsugamushi antibody (anti-rt antibody) by the indirect immunofluorescence test. the anti-rt antibody-positive rate in the inhabitants of the endemic area (about 50%) was statistically significantly higher than that in the nonendemic area (14.7%). the antibody titer in the inhabitants of the endemic area was 10-160, and the ... | 1987 | 3123897 |