Survey of the vectorial competence of ticks in an endemic area of spotted fever group rickettsioses in Fukui Prefecture, Japan.
Microbiol Immunol
; 52(6): 305-9, 2008 Jun.
Article
en En
| MEDLINE
| ID: mdl-18577164
ABSTRACT
The prevalence of SFGR in ixodid ticks in the Mt. Arashima-dake area in the northern part of Fukui Prefecture was surveyed, because of strong suspicions that the first case identified in this Prefecture had become infected with R. helvetica in this region. The ticks identified consisted of three genera and six species; I.ovatus, I. persulcatus, I. monospinosus, H. flava, H. japonica and D. taiwanensis. Of all 222 ticks collected, only I. monospinosus ticks (8 of 32 examined) were positive for SFGR isolates, which were genetically identified as R. helvetica. Ticks (157 of all 222) positive for SFGR-DNA fragments consisted of I. monospinosus (14 of 32), I. persulcatus (11 of 55), I. ovatus (3 of 38), H. flava (5 of 21) and H. japonica (2 of 9). Of these, thirteen I. monospinosus, eight I. persulcatus, three I. ovatus, two H. flava and one H. japonica were identified by nucleotide sequences as positive for R. helvetica. DNA fragments from three H. flava and one H. japonica showed greater homology to R. japonica than to R. helvetica or R. asiatica. The present results indicate that it is most likely that the vector tick of R. helvetica infection in Fukui Prefecture is I. monospinosus.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Vectores Arácnidos
/
Infecciones por Rickettsia
/
Monitoreo del Ambiente
/
Ixodidae
Tipo de estudio:
Risk_factors_studies
/
Screening_studies
Límite:
Animals
País/Región como asunto:
Asia
Idioma:
En
Revista:
Microbiol Immunol
Año:
2008
Tipo del documento:
Article
País de afiliación:
Japón