| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 338 | 195 | 40 |
| Full Text Views | 208 | 1 | 1 |
| PDF Downloads | 68 | 2 | 2 |
Detection of the agents of human ehrlichioses in ixodid ticks from California.
V L Kramer
V L Kramer
Division of Communicable Disease Control, California Department of Health Services, Sacramento 94234-7320, USA.
Search for other papers by V L Kramer in
Current site
Google Scholar
PubMed
Search for other papers by V L Kramer in
Current site
Google Scholar
PubMed
M P Randolph
M P Randolph
Division of Communicable Disease Control, California Department of Health Services, Sacramento 94234-7320, USA.
Search for other papers by M P Randolph in
Current site
Google Scholar
PubMed
Search for other papers by M P Randolph in
Current site
Google Scholar
PubMed
L T Hui
L T Hui
Division of Communicable Disease Control, California Department of Health Services, Sacramento 94234-7320, USA.
Search for other papers by L T Hui in
Current site
Google Scholar
PubMed
Search for other papers by L T Hui in
Current site
Google Scholar
PubMed
W E Irwin
W E Irwin
Division of Communicable Disease Control, California Department of Health Services, Sacramento 94234-7320, USA.
Search for other papers by W E Irwin in
Current site
Google Scholar
PubMed
Search for other papers by W E Irwin in
Current site
Google Scholar
PubMed
A G Gutierrez
A G Gutierrez
Division of Communicable Disease Control, California Department of Health Services, Sacramento 94234-7320, USA.
Search for other papers by A G Gutierrez in
Current site
Google Scholar
PubMed
Search for other papers by A G Gutierrez in
Current site
Google Scholar
PubMed
D J Vugia
D J Vugia
Division of Communicable Disease Control, California Department of Health Services, Sacramento 94234-7320, USA.
Search for other papers by D J Vugia in
Current site
Google Scholar
PubMed
Search for other papers by D J Vugia in
Current site
Google Scholar
PubMed
A study was conducted in northern California to estimate the prevalence and distribution in ixodid ticks of the rickettsial agents of human monocytic (HME) and human granulocytic (HGE) ehrlichioses. More than 650 ixodid ticks were collected from 17 sites in six California counties over a 15-month period. Ehrlichia chaffeensis, the causative agent of HME, was detected by a nested polymerase chain reaction (PCR) in Ixodes pacificus (minimum infection rate [MIR] = 13.3%) and Dermacentor variabilis (infection rate=20.0%) from a municipal park in Santa Cruz County. The HGE agent was detected by nested PCR in I. pacificus adults from a heavily used recreational area in Alameda County (MIR = 4.7%) and a semirural community in Sonoma County (MIR = 6.7%). Evidence of infection with Ehrlichia spp. was not detected in D. occidentalis adults or I. pacificus nymphs. This study represents the first detection of E. chaffeensis in California ticks and the first report of infection in Ixodes spp. The competency of I. pacificus to be coinfected with and to transmit multiple disease agents, including those of human ehrlichioses and Lyme disease, has yet to be determined.
Author Notes
| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 338 | 195 | 40 |
| Full Text Views | 208 | 1 | 1 |
| PDF Downloads | 68 | 2 | 2 |