Technical documents and research evidence on COVID-19: Recent submissions
Now showing items 21-40 of 1749
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Comparative Studies of some African Arboviruses in Cell Culture and in Mice
(2014)Twenty African arboviruses, five alphaviruses, nine flaviviruses, three Bunyamwera Group viruses, two Bwamba Group viruses and one ungrouped virus were titrated in parallel in 11 cell systems, in suckling mice and adult ... -
Epidemiological investigations on arbovirus infections at Igbo-Ora, Nigeria
(2014)A study of arbovirus infections occurring in Igbo-Ora community was carried out between May and October 1975. Haemagglutination inhibition test performed on seventy-eight human sera showed a high prevalence of antibodies ... -
A serological survey of arboviruses in the human population of Senegal
(2014)2,457 serum samples collected during an epidemiological survey on treponematosis in Senegal by the W. H. O. IR051 team in five areas of Senegal between 1972 and 1975 were studied for arbovirus antibodies using hemagglutination ... -
A serological survey of arboviruses in Gabon
(2014)Serological studies for arbovirus antibodies were carried out on 1.279 human serum specimens collected from adults in south-eastern part of Gabon from June to September 1975 during a multipurpose epidemiological survey. ... -
Zika virus infections in Nigeria: virological and seroepidemiological investigations in Oyo State
(2014)A study of Zika virus infections was carried out in four communities in Oyo State, Nigeria. Virus isolation studies between 1971 and 1975 yielded two virus isolations from human cases of mild febrile illness. Haemaggluti ... -
Limitations of the complement-fixation test for distinguishing naturally acquired from vaccine-induced yellow fever infection in flavivirus-hyperendemic areas
(2014)On the basis of previous studies, it has long been stated that 17D yellow fever (YF) vaccine generally does not induce complement-fixing (CF) antibodies, and that the presence of CF antibodies could be used in epidemiological ... -
Zika virus, a cause of fever in Central Java, Indonesia
(2014)In 1977 and 1978 selected in-patients at the Tegalyoso Hospital, Klaten, Indonesia who had recent onsets of acute fever were serologically studied for evidence of alphavirus and flavivirus infections. A brief clinical ... -
Serological survey for the prevalence of certain arboviruses in the human population of the south-east area of Central African Republic (author's transl)
(2014)A serological survey of antibodies to arboviruses was carried out in the human population of the south-east part of Central African Republic in April 1979. Four hundred and fifty nine serum samples were tested using the ... -
Yellow fever and Zika virus epizootics and enzootics in Uganda
(2014)Data of monkey serology are presented which, together with past evidence, support the view that yellow fever (YF) virus circulates in its primary sylvan host populations, i.e., forest monkeys, in an enzootic state in Bwamba ... -
Serological survey for arbovirus antibodies in the human and simian populations of the South-East of Gabon (author's transl)
(2014)A serological survey for arbovirus antibodies was carried out in human and simian populations of the South-East of Gabon. 197 human sera (adults), 34 simian sera (collected in the monkey colony of the Centre International ... -
Arthropod-borne virus antibodies in sera of residents of Kainji Lake Basin, Nigeria 1980
(2014)A survey for haemagglutination-inhibiting arthropod-borne virus antibody was carried out in the Kainji Lake area of Nigeria. Of 267 persons tested, 139 (52%) and 158 (59%) had alphavirus and flavivirus group HI antibody, ... -
A sero-epidemiological survey for certain arboviruses (Togaviridae) in Pakistan
(2014)Complement-fixation test reactions to eight viruses of the family Togaviridae were studied in 372 serum samples (157 rodents, 172 domestic animals, 43 humans) from Pakistan. Antibodies to each tested virus were detected. ... -
A survey for arboviral antibodies in sera of humans and animals in Lombok, Republic of Indonesia
(2014)Sera were collected from humans, cattle, horses, goats, ducks, chickens, wild birds, bats and rats in Lombok, Indonesia, and were tested by haemagglutination inhibition (HI) for antibodies to JE, ZIKA, CHIK and RR. Selected ... -
Yellow fever monoclonal antibodies: type-specific and cross-reactive determinants identified by immunofluorescence
(2014)Monoclonal antibodies directed against the envelope glycoprotein and the NV3 non-structural viral protein of yellow fever (YF) were tested by the indirect fluorescent antibody technique against a variety of YF virus strains ... -
Antibody-mediated enhancement of Wesselsbron virus in P388D1 cells
(2014)Antibody-mediated enhancement of Wesselsbron virus was investigated in P388D1 cell cultures. Virus infection was enhanced in culture by various dilutions of homologous and heterologous flavivirus antibody. Highest enhancement ... -
Cross-infection enhancement among African flaviviruses by immune mouse ascitic fluids
(2014)Cross-infection enhancement of seven African flaviviruses by subneutralising concentrations of antibody in immune ascitic fluids was investigated in P388D1 cell culture. Infection by all the seven flaviviruses tested was ... -
Detection of Virus-specific Antigen in the Nuclei or Nucleoli of Cells Infected with Zika or Langat Viru
(2014)Two monoclonal antibodies (MAbs) with molecular specificities for either the viral envelope glycoprotein (MAb 541) or the non-structural NS1 glycoprotein (MAb 109) were derived using West Nile and yellow fever (YF) viruses ... -
Arbovirus infections and viral haemorrhagic fevers in Uganda: a serological survey in Karamoja district, 1984
(2014)Abstract Sera collected in May 1984 from 132 adult residents of Karamoja district, Uganda, were examined by haemagglutination inhibition tests for antibodies against selected arboviruses, namely Chikungunya and Semliki ... -
Genetic selection of a flavivirus-refractory strain of the yellow fever mosquito Aedes aegypti
(2014)Two inbred (isofemale) Aedes aegypti mosquito lines were derived that manifested a resistant or susceptible phenotype following ingestion of yellow fever virus; lack of virus movement from the midgut defined the resistant ... -
Surveillance of the circulation of arbovirus of medical interest in the region of eastern Senegal
(2014)A study about the circulation of arboviruses of medical interest in southeastern Senegal was conducted from 1988 to 1991, during and around the periods of transmission. Specific IgM antibodies were detected by ELISA test ...