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Closed Access item Spotted fever group rickettsiae in ticks feeding on humans in northwestern Spain: is Rickettsia conorii vanishing?

Authors:Fernández Soto, Pedro
Pérez Sánchez, Ricardo
Encinas Grandes, Antonio
Keywords:Mediterranean spotted fever, Rickettsia conorii, R. slovaca, R. aeschlimannii, Castilla y León, Spain
Issue Date:31-Oct-2006
Publisher:Blackwell Publishing
Citation:Annals of the New York Academy of Sciences 1078: 331-333 (2006)
Abstract:During a 7-year study, we identified and analyzed by PCR 4,049 ticks removed from 3,685 asymptomatic patients in Castilla y León (northwestern Spain). A total of 320 ticks (belonging to 10 species) were PCR-positive for rickettsiae. Comparison of amplicon sequences in databases enabled us to identify eigth different spotted fever group (SFG) rickettsiae: Rickettsia slovaca, Rickettsia sp. IRS3/IRS4, R. massiliae/Bar29, R. aeschlimannii, Rickettsia sp. RpA4/DnS14, R. helvetica, Rickettsia sp. DmS1, and R. conorii. Although Mediterranean spotted fever (MSF) is an endemic disease in Castilla y León, R. conorii was found in only one Rhipicephalus sanguineus tick, whereas other pathogenic SFG rickettsiae were much more prevalent in the same area. Our data suggest that in Castilla y León, many MSF or MSF-like cases attributed to R. conorii could have been actually caused by other SFG rickettsiae present in ticks biting people in this region of Spain.
Description:3 pages.-- PMID: 17114733 [PubMed].
Issue title: Century of Rickettsiology; Emerging, Reemerging Rickettsioses, Molecular Diagnostics, and Emerging Veterinary Rickettsioses.
Publisher version (URL):http://dx.doi.org/10.1196/annals.1374.063
Appears in Collections:(IRNASA) Artículos

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