RESUMEN
The circulation of the rickettsiae R.africae and C.brunetii, the causative agents of African tick-bite spotted fever and Q fever, was first ascertained throughout the territory of the Republic of Guinea. The immune stratum against R.africae among the population varied 1.1 to 25.4% or 10.6+/-0.7% on average and that among the livestock did 0.6 to 18.8% or 7.6+/-0.6% on average. The proportion of sera to C,brunettii in the population was in the rage from 0.8 to 10.5% or 2.4+/-0.3% on average; that in livestock was 3.2 to 18.7% or 8.0+/-0.6% on average. However, many aspects of the circulation of rickettsiae, the pathology and importance of these fevers in the structure of morbidity in Guinea remain still unclarified and call for further investigations, by applying the current laboratory diagnostic tests for rickettsiosial diseases.
Asunto(s)
Antígenos Bacterianos/sangre , Vectores Artrópodos/microbiología , Ganado/microbiología , Fiebre Q/veterinaria , Infecciones por Rickettsia/veterinaria , Garrapatas/microbiología , Animales , Coxiella burnetii/patogenicidad , Guinea/epidemiología , Humanos , Ganado/sangre , Ganado/parasitología , Fiebre Q/sangre , Fiebre Q/inmunología , Fiebre Q/transmisión , Rickettsia/patogenicidad , Infecciones por Rickettsia/sangre , Infecciones por Rickettsia/inmunología , Infecciones por Rickettsia/transmisiónAsunto(s)
Anticuerpos Antibacterianos/análisis , Enfermedades de los Bovinos/epidemiología , Fiebre Q/epidemiología , Infecciones por Rickettsia/epidemiología , Animales , Bovinos , Coxiella/inmunología , Humanos , Lituania , Fiebre Q/veterinaria , Rickettsia/inmunología , Infecciones por Rickettsia/veterinaria , Rickettsiaceae/inmunología , Garrapatas/microbiologíaRESUMEN
Antibodies against Coxiella burnetii and against rickettsiae of the spotted fever group were found in human sera and in sera from domestic and wild animals collected in south Bohemia. Spotted fever group rickettsiae were also discovered in the tick Ixodes ricinus. These results indicate the presence of both types of rickettsiae in this part of Czechoslovakia. As no epizootics or epidemics of Q fever have as yet been reported in the area, it can be assumed that C. burnetii occurs in the latent state. The occurrence of spotted fever group rickettsiae is probably endemic among I. ricinus ticks and among small and larger wild mammals.
Asunto(s)
Infecciones por Rickettsiaceae/transmisión , Animales , Anticuerpos Antivirales/aislamiento & purificación , Bovinos , Coxiella/inmunología , Checoslovaquia , Humanos , Fiebre Q/inmunología , Conejos , Infecciones por Rickettsiaceae/epidemiología , GarrapatasRESUMEN
Ixodid ticks collected in the Armenian SSR during 1971 and 1974 were positive for rickettsiae of the spotted fever group, as confirmed by haemocyte tests and by isolation experiments. Serum specimens collected from human beings and from domestic and wild animals in the same areas contained antibodies against such rickettsiae and against Coxiella burnetii. These results indicate the existence of mixed natural foci of rickettsioses of the spotted fever group and of Q fever in the Armenian SSR.