| arbovirus investigations in argentina, 1977-1980. ii. arthropod collections and virus isolations from argentine mosquitoes. | prospective surveys for arboviruses were carried out in santa fe, corrientes, and chaco provinces, argentina, aperiodically during 1977-1980. a total of 313,233 mosquitoes and 598 biting flies other than mosquitoes were collected and tested for virus in 5,197 and 45 pools, respectively. forty virus strains were isolated, all from mosquitoes, as follows: santa fe province: 4 gamboa group viruses from aedeomyia squamipennis, 1 strain each of st. louis encephalitis virus from culex pipiens quinquef ... | 1985 | 2863989 |
| arbovirus investigations in argentina, 1977-1980. iii. identification and characterization of viruses isolated, including new subtypes of western and venezuelan equine encephalitis viruses and four new bunyaviruses (las maloyas, resistencia, barranqueras, and antequera). | forty viruses isolated from mosquitoes between 1977 and 1980 in argentina have been identified and characterized. nineteen strains of vee virus, identical by neutralization (n) tests, were shown by hemagglutination-inhibition tests with anti-e2 glycoprotein sera to represent a new subtype vi of the vee complex. rna oligonucleotide fingerprints of this virus were distinct from subtype i viruses. the virus was not lethal for english short-haired guinea pigs, indicating that it is probably not equi ... | 1985 | 2863990 |
| arbovirus investigations in argentina, 1977-1980. iv. serologic surveys and sentinel equine program. | serologic surveys of wild and domestic birds, wild mammals, and horses were conducted during arbovirus field studies in argentina from 1977 through 1980, a non-epizootic interval. the prevalence of neutralizing antibodies to eastern equine encephalitis (eee) was consistently higher than to western equine encephalitis (wee) virus in all species and all areas. the presence of antibodies in short-lived avian species and in young unvaccinated horses and the demonstration of seroconversions in horses ... | 1985 | 2863991 |
| arbovirus investigations in argentina, 1977-1980. i. historical aspects and description of study sites. | this is the introductory paper to a series on the ecology of arboviruses in argentina. epizootics of equine encephalitis have occurred since at least 1908, principally in the pampa and espinal biogeographic zones, with significant economic losses; human cases of encephalitis have been rare or absent. both western equine and eastern equine encephalitis viruses have been isolated from horses during these epizootics, but the mosquitoes responsible for transmission have not been identified. a number ... | 1985 | 4037184 |