Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera
SUMMARY Seven virus strains antigenically related to the California encephalitis (CE) virus group were isolated from Norwegian Aedes spp. mosquitoes collected in 1976. So far CE viruses have been isolated from five different Aedes spp. in Norway. Furthermore, two virus strains related to the Bunyamw...
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Cambridge University Press (CUP)
1985
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Online Access: | http://dx.doi.org/10.1017/s0022172400061180 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022172400061180 |
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crcambridgeupr:10.1017/s0022172400061180 2024-03-03T08:47:23+00:00 Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera Traavik, Terje Mehl, Reidar Wiger, Richard 1985 http://dx.doi.org/10.1017/s0022172400061180 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022172400061180 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Hygiene volume 94, issue 1, page 111-122 ISSN 0022-1724 Public Health, Environmental and Occupational Health Immunology journal-article 1985 crcambridgeupr https://doi.org/10.1017/s0022172400061180 2024-02-08T08:42:49Z SUMMARY Seven virus strains antigenically related to the California encephalitis (CE) virus group were isolated from Norwegian Aedes spp. mosquitoes collected in 1976. So far CE viruses have been isolated from five different Aedes spp. in Norway. Furthermore, two virus strains related to the Bunyamwera group were isolated from Anopheles claviger . Antibodies to CE viruses were demonstrated in 22% of 1014 military recruits tested. Among 91 soldiers who were monitored by monthly blood samples during the mosquito season, seroconversions were detected in 11 individuals. Specific IgM antibodies were found in seven of them. Disease symptoms in connexion with the CE virus infections were not seen. The prevalence of CE antibodies in patients with CNS or respiratory infections was not higher than in control groups. Seroconversions were not seen in any of the groups. Screening of sheep sera from six different areas in northern Norway indicated significantly different degrees of CE virus activity. Passerine birds may be important CE virus hosts, while small rodents seem unimportant. Specific IgM antibodies were detected in the sera of one of three hares and one of two squirrels. Of the methods used, single radial haemolysis (SRH) and immuno-electroosmophoresis (IEOP) seemed to be well suited for serological screenings. However, an indirect immunofluorescence antibody test (IFAT) which was used may be an attractive alternative if high-quality anti-species conjugates are available. The haemagglutination-inhibition (HI) test used gave a high number of false positive results. Article in Journal/Newspaper Northern Norway Cambridge University Press Norway Journal of Hygiene 94 1 111 122 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Public Health, Environmental and Occupational Health Immunology |
spellingShingle |
Public Health, Environmental and Occupational Health Immunology Traavik, Terje Mehl, Reidar Wiger, Richard Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera |
topic_facet |
Public Health, Environmental and Occupational Health Immunology |
description |
SUMMARY Seven virus strains antigenically related to the California encephalitis (CE) virus group were isolated from Norwegian Aedes spp. mosquitoes collected in 1976. So far CE viruses have been isolated from five different Aedes spp. in Norway. Furthermore, two virus strains related to the Bunyamwera group were isolated from Anopheles claviger . Antibodies to CE viruses were demonstrated in 22% of 1014 military recruits tested. Among 91 soldiers who were monitored by monthly blood samples during the mosquito season, seroconversions were detected in 11 individuals. Specific IgM antibodies were found in seven of them. Disease symptoms in connexion with the CE virus infections were not seen. The prevalence of CE antibodies in patients with CNS or respiratory infections was not higher than in control groups. Seroconversions were not seen in any of the groups. Screening of sheep sera from six different areas in northern Norway indicated significantly different degrees of CE virus activity. Passerine birds may be important CE virus hosts, while small rodents seem unimportant. Specific IgM antibodies were detected in the sera of one of three hares and one of two squirrels. Of the methods used, single radial haemolysis (SRH) and immuno-electroosmophoresis (IEOP) seemed to be well suited for serological screenings. However, an indirect immunofluorescence antibody test (IFAT) which was used may be an attractive alternative if high-quality anti-species conjugates are available. The haemagglutination-inhibition (HI) test used gave a high number of false positive results. |
format |
Article in Journal/Newspaper |
author |
Traavik, Terje Mehl, Reidar Wiger, Richard |
author_facet |
Traavik, Terje Mehl, Reidar Wiger, Richard |
author_sort |
Traavik, Terje |
title |
Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera |
title_short |
Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera |
title_full |
Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera |
title_fullStr |
Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera |
title_full_unstemmed |
Mosquito-borne arboviruses in Norway: further isolations and detection of antibodies to California encephalitis viruses in human, sheep and wildlife sera |
title_sort |
mosquito-borne arboviruses in norway: further isolations and detection of antibodies to california encephalitis viruses in human, sheep and wildlife sera |
publisher |
Cambridge University Press (CUP) |
publishDate |
1985 |
url |
http://dx.doi.org/10.1017/s0022172400061180 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022172400061180 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
Journal of Hygiene volume 94, issue 1, page 111-122 ISSN 0022-1724 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0022172400061180 |
container_title |
Journal of Hygiene |
container_volume |
94 |
container_issue |
1 |
container_start_page |
111 |
op_container_end_page |
122 |
_version_ |
1792503570089639936 |