AI Article Synopsis
- Between 2002 and 2004, 15 cases of Rocky Mountain spotted fever (RMSF) were reported in an Arizona community where the disease was previously unknown.
- The outbreak was linked to the brown dog tick, which had not been recognized as a RMSF transmitter in the U.S. before.
- Serologic tests showed increased exposure to RMSF among local children (10%) and dogs (70%), compared to lower rates (5%) from samples taken in 1996, indicating that RMSF may now be endemic in the area.
Article Abstract
During 2002 through 2004, 15 patients with Rocky Mountain spotted fever (RMSF) were identified in a rural community in Arizona where the disease had not been previously reported. The outbreak was associated with Rickettsia rickettsii in an unexpected tick vector, the brown dog tick (Rhipicephalus sanguineus), which had not been previously associated with RMSF transmission in the United States. We investigated the extent of exposure to R. rickettsii in the local area through serologic evaluations of children and dogs in 2003-2004, and in canine sera from 1996. Antibodies to R. rickettsii at titers > or = 32 were detected in 10% of children and 70% of dogs in the outbreak community and 16% of children and 57% of dogs in a neighboring community. In comparison, only 5% of canine samples from 1996 had anti-R. rickettsii antibodies at titers > or = 32. These results suggest that exposures to RMSF have increased over the past 9 years, and that RMSF may now be endemic in this region.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1089/vbz.2006.6.423 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!