Search PubMed⌕ Search

Biomedical subjects

F Rodhain

Publications and source records attributed to F Rodhain.

At least 91 records · Page 5Linked to original sources
PubMed1984

[Research on viral infections in South Pacific mosquitoes under natural conditions].

From 1975, epidemiological studies on arboviral diseases, conducted in New Caledonia, Vanuatu, Wallis and Horne Islands, have shown that 11 species of mosquitoes may harbour viruses in natural conditions. Virus isolations were attempted from 1,025 pools of Culicidae totalizing 32,182 individuals belonging to 5 genera and 21 species. Viral infections have been demonstrated in 76 pools (7.4%). The species harbouring viruses were: Aedes aegypti, Ae. alternans, Ae. notoscriptus, Ae. vexans, Ae. vigilax, Culex annulirostris, C. bitaeniorhynchus, C. iyengari, Culex pipiens quinquefasciatus, Coquillettidia xanthogaster. Among the strains definitively identified, dengue 1 virus was recovered from Ae. aegypti, Ae. polynesiensis, Ae. vigilax, dengue 4 virus was obtained from Ae. aegypti, Ae. vigilax, C. xanthogaster, C. annulirostris. Ross River virus was identified in Ae. vigilax and C. quinquefasciatus. The infected mosquitoes originated from New Cadedonia, Vanuatu (Aoba), Wallis and Horne Islands.

Aedes↗
PubMed1984

[West Nile virus meningomyeloencephalitis--value of interferon assays in primary encephalitis].

A 68 year-old woman contracted West Nile fever after a stay of one month in Israel. Mild encephalitis and severe myelitis, resembling the "polio syndrome", developed, with important sequelae. Specific antibodies against West Nile fever virus progressively increased in the patient's serum. Epidemiological and clinical data about neurologic aspects of this infection are reviewed. Meningoencephalitis is not unusual, but only one previous case of acute anterior myelitis has been described in humans although this pathology is well known in experimental and veterinary diseases. Very few studies concern interferon and arbovirus infections in humans. Interferon assays in our patient's serum and cerebrospinal fluid showed its presence and persistence: this is in relation with the replication of the virus in the central nervous system, as it has been demonstrated in other primary viral encephalitis.

Aged↗
PubMed1983

[Description of a new Aedes of the subgenus Ochlerotatus (Diptera: Culicidae) from Madagascar: Aedes ambreensis n.sp. and general observations on the females of the subgenus Ochlerotatus in the Afro-tropical region].

The authors describe the female of a new malagasy Aedes species belonging to the sub-genus Ochlerotatus, collected during epidemiological surveys on arboviroses: Ae. ambreensis n. sp. With this description, a review of Afro-tropical Ochlerotatus species is proposed, particularly on principal morphological female characters and geographical distributions. A key for identification of afro-tropical adult females of the sub-genus Ochlerotatus is annexed.

Aedes↗
PubMed1982

Arboviruses and lemurs in Madagascar: a preliminary note.

The epidemiological role played by lemurs in the circulation of arboviruses in Madagascar has been studied. From serological (HAI) tests, exposure of lemurs to alphaviruses and flaviviruses appears to vary considerably with location and species of lemur; positive tests varied from 0 to 32%. Finally, the data concerning the lemurophilic part of the mosquito fauna suggests that some lemur species and man are infected by the same arboviruses, especially West Nile virus. The susceptibility of these primates to yellow fever virus, which has not yet occurred in Madagascar is under study.

Animals↗
PubMed1981

[Asiatic dengue in France: 9 cases, of which one of the thrombopenic type (author's transl)].

Asiatic dengue was detected in nine tourists. In eight patients it was of the classical benign type, the ninth case being associated with severe thrombopenia (4 000/mm3), but without signs of shock. A brief summary is given of the physiopathology of the hemorrhagic forms of the disease: acquired sensitivity from a primary attack and reinfection with a heterologous virus; selection of virulent strains by an atypical vector; genetic recombination producing a strongly pathogenic virus.

Adult↗
PubMed1979

[Ecology of indigenious arbovirus in Alsace. Tick Central European Encephalitis. I.--Complex Ixodes ricinus--bank voles. II.--Study of bank voles population immunity. III.--Virologic results in bank voles population (author's transl)].

I.--After showing that bank voles are parasited only by Ixodes ricinus larvae, the authors attempt to found different factors (demographic, biometric, and sexual) who favor individual parasitism. The authors conclude to absent of anti tick immunity for this rodent specie. II.--The search for anti-central european encephalitis antibodies (I.H.A.) are shown that 2 p. cent animals were immuns. Yearly and monthly chronologies of antibodies apparition are shown, factors favoring the growth of specific Central european encephalitis antibodies are discussed. III.--The Central european encephalitis tick viral infection of bank vole is studied according to the number of viral strains isolated from different viscera. The monthly chronology of this infection is shown.

Animals↗
PubMed1979

[The dynamic ecology of virus-vector system (author's transl)].

The phenomenon of arbovirus transmission by their vectors is based upon the constitution of virus-vector systems, not only at the species level, but also at an infra-specific level. The study of such systems leads to consider some particular aspects of their ecology which can have important epidemiological consequences (selection of viral clones by the vector, transovarial and sexual transmissions). Finely the authors approach the question of evolution of virus-vector systems, which appear as adaptative, functional and temporary associations.

Aedes↗
PubMed1978

[Epidemiology of Burkitt's lymphoma in tropical areas - its relationship with malaria (author's transl)].

Epidemiology of tropical Burkitt's lymphoma shows the concomitant existence of the three following characteristics in endemic areas: - fairly dense rural population with a low standard of living; - early occurrence of primary infection by the Epstein-Barr virus (whose genome is always present in all tumour cells); - stable malaria. The social and economic level of these areas accounts for the specific features of the viral infection. Climatic factors determine permanent of prolonged transmission of malaria which could be mediated through a mitogen. Eradication of malaria could be a useful way to induce a fall in Burkitt's lymphoma incidence.

Africa↗