Arbovirological survey in Silica plateau area, Roznava District, Czechoslovakia
Fri, 2007-02-02 15:01 — Vince Smith
| Title | Arbovirological survey in Silica plateau area, Roznava District, Czechoslovakia |
| Publication Type | Journal Article |
| Year of Publication | 1986 |
| Authors | Hubalek, Z, Cerny V, Mittermayer T, Kilik J, Halouzka J, Juricova Z, Kuhn I, Bardos V |
| Journal | Journal of Hygiene, Epidemiology, Microbiology, and Immunology |
| Volume | 30 |
| Pages | 87-98 |
| Accession Number | 45453 |
| Keywords | adolescent; Adult ; Age Factors ; Aged ; Animals ; Antibodies, Inbred ICR ; Middle Ag, Viral/analysis ; Arboviruses/immunology/isolation & purification ; Cattle ; Child ; Czechoslovakia ; Goats ; Hemagglutination ; Humans ; Lice/microbiology ; Mice ; Mice |
| Abstract | The serosurveys conducted in the Silica plateau area of the Slovak karst region revealed the presence of specific neutralizing antibody against tick-borne encephalitis (TBE) virus in 18% of local inhabitants (33 examined, mostly goats and sheep farmers), 54% of goats (26 examined), 18% of sheep (120 examined) and 13% of cattle (60 examined), against Lipovnik (LIP) virus in 30% of inhabitants, 88% of goats, 55% of sheep and 45% of cattle, and against Bhanja (BHA) virus in 27% of inhabitants, 46% of goats, 29% of sheep and 23% of cattle. The results of hemagglutination-inhibition tests with TBE and BHA antigens were analogous. A detailed analysis of these serologic data points to a recent enhancement of the circulation of LIP and BHA viruses and to a very low TBE virus activity in this natural focus of arboviral infections. The immunological surveys of the 32 former "Roznava disease" patients, conducted 25 years after an extensive epidemic of a TBE virus infection that originated in Roznava in 1951, revealed the presence of neutralizing (and also hemagglutination-inhibiting) antibodies against TBE virus in as many as 78% of cases. Antibodies against LIP and BHA viruses were also detectable in the sera of 16% and 9%, respectively, of these individuals. Populations of the ectoparasites examined for the presence of arbovirus comprised 231 Ixodes ricinus, 806 Dermacentor marginatus and 204 Haemaphysalis punctata ticks and 117 specimens of the louse-flies Melophagus ovinus. Two strains of arbivirus that were antigenically related to Lipovnik and Tribec viruses belonging to a group of Kemerovo viruses were isolated from male and female I. ricinus ticks collected from cattle. |