| mediterranean spotted fever in salamanca, spain. epidemiological study in patients and serosurvey in animals and healthy human population. | mediterranean spotted fever is a spotted fever group rickettsiosis caused by rickettsia conorii. the fever has a recognized incidence in large geographic areas, and its presence in salamanca province (spain) has been well documented since 1981. this work presents the results of the centralized prospective survey carried out in this area and was designed to study the epidemiological behavior of the disease and the prevalence of antibodies against r. conorii among animals and healthy human populat ... | 1989 | 2575869 |
| antigens of rickettsia conorii recognized by seropositive healthy people from salamanca (central-west spain). | the antigenic reactivity in western immunoblotting assay of individual rickettsia conorii components with sera of healthy people living in salamanca province, an endemic zone of mediterranean spotted fever, is evaluated. polypeptides of molecular weights 100 kda (92.7%), 135 kda (75.6%), 160 kda (70.7%) and 115 kda (48.8%) were recognized by a higher proportion of sera with indirect immunofluorescent antibody test titers > or = 1:80. reaction with apparent rickettsial lipopolysaccharide was foun ... | 1993 | 8472802 |
| detection of antibodies to tick salivary antigens among patients from a region of spain. | with a view to determine which tick species bite humans most frequently in the province of soria (spain) and to know whether these species act as vectors of rickettsia conorii and/or borrelia burgdorferi, we analysed the presence of antibodies against salivary proteins of several tick species and of antibodies against r. conorii and b. burgdorferi sensu lato in 102 samples of serum. the sera were collected from 63 patients who were treated for tick bites at the health services of the soria healt ... | 2004 | 15012027 |
| spotted fever group rickettsiae in ticks feeding on humans in northwestern spain: is rickettsia conorii vanishing? | 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 eight 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. dms ... | 2006 | 17114733 |