Records |
Author |
Beveridge, W.I. |
Title |
Unravelling the ecology of influenza A virus |
Type |
Journal Article |
Year |
1993 |
Publication |
History and Philosophy of the Life Sciences |
Abbreviated Journal |
Hist Philos Life Sci |
Volume |
15 |
Issue |
1 |
Pages |
23-32 |
Keywords |
Animals; Bird Diseases/epidemiology/*history/microbiology; Birds; Ecology; History, 20th Century; Horse Diseases/epidemiology/*history/microbiology; Horses; Humans; Influenza A virus/*isolation & purification; Influenza, Human/epidemiology/*history/microbiology/*veterinary; Swine; Swine Diseases/epidemiology/*history/microbiology; Zoonoses/history |
Abstract |
For 20 years after the influenza A virus was discovered in the early 1930s, it was believed to be almost exclusively a human virus. But in the 1950s closely related viruses were discovered in diseases of horses, pigs and birds. Subsequently influenza A viruses were found to occur frequently in many species of birds, particularly ducks, usually without causing disease. Researchers showed that human and animal strains can hybridise thus producing new strains. Such hybrids may be the cause of pandemics in man. Most pandemics have started in China or eastern Russia where many people are in intimate association with animals. This situation provides a breeding ground for new strains of influenza A virus. |
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English |
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Edition |
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ISSN |
0391-9714 |
ISBN |
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Notes |
PMID:8310117 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2667 |
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Author |
Stout, I.J.; Clifford, C.M.; Keirans, J.E.; Portman, R.W. |
Title |
Dermacentor variabilis (Say) (Acarina: Ixodidae) established in southeastern Washington and northern Idaho |
Type |
Journal Article |
Year |
1971 |
Publication |
Journal of Medical Entomology |
Abbreviated Journal |
J Med Entomol |
Volume |
8 |
Issue |
2 |
Pages |
143-147 |
Keywords |
Animals; Arthropod Vectors; Disease Reservoirs/*epidemiology; Dogs; Ecology; Female; Horses; Humans; Idaho; Larva; Male; Seasons; Sheep; Tick Infestations/*epidemiology/veterinary; Ticks/*classification; Washington; Zoonoses |
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English |
Summary Language |
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Original Title |
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Series Editor |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0022-2585 |
ISBN |
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Notes |
PMID:5157834 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2729 |
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Author |
Barwick, R.S.; Mohammed, H.O.; McDonough, P.L.; White, M.E. |
Title |
Epidemiologic features of equine Leptospira interrogans of human significance |
Type |
Journal Article |
Year |
1998 |
Publication |
Preventive Veterinary Medicine |
Abbreviated Journal |
Prev Vet Med |
Volume |
36 |
Issue |
2 |
Pages |
153-165 |
Keywords |
Animals; Horse Diseases/epidemiology/*microbiology; Horses/microbiology; Humans; *Leptospira interrogans; New York/epidemiology; Weil Disease/epidemiology/microbiology/*veterinary; Zoonoses/epidemiology/*microbiology |
Abstract |
Leptospirosis is a zoonotic bacterial disease caused by Leptospira interrogans. There is a serologic evidence that horses are exposed to L. interrogans and, as a shedder of these organisms, can be a threat to humans. We examined risk factors associated with the risk of testing seropositive to three L. interrogans serovars (L. icterohaemorrhagiae, L. grippotyphosa, and L. canicola) in the horses of New York State, in order to understand the epidemiology of the disease and suggest strategies to control and prevent equine leptospirosis. To carry out this study, blood samples were collected from a random sample of 2551 horses and tested for the presence of antibodies to the above serovars using the microscopic agglutination test. Samples with a titer $100 were considered positive. Clinical and demographic data were collected on each horse, the farms' management practices and ecology. Logistic regression analysis was used to develop a multivariate indexing system and to identify factors significantly associated with the risk of leptospirosis. Four indices were developed based on the possible sources of exposure: rodent exposure index; wildlife exposure index; soil and water index; and management index. The soil and water index was significantly associated with the risk of exposure to all three serovars. Management was positively associated with L. icterohaemorrhagiae and L. canicola. Density of horses turned out together was positively associated with the risk of exposure to L. grippotyphosa. We concluded that indirect exposure of horses to L. interrogans through contaminated soil and water appears to be significantly associated with the risk of exposure to all three serovars. Management appears to play an important role in the exposure to L. interrogans. Modification of management practices might reduce the horses' risk of exposure and hopefully minimize the human hazards. |
Address |
Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA |
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Edition |
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ISSN |
0167-5877 |
ISBN |
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Notes |
PMID:9762736 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2653 |
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Author |
Alexander, D.J. |
Title |
Ecological aspects of influenza A viruses in animals and their relationship to human influenza: a review |
Type |
Journal Article |
Year |
1982 |
Publication |
Journal of the Royal Society of Medicine |
Abbreviated Journal |
J R Soc Med |
Volume |
75 |
Issue |
10 |
Pages |
799-811 |
Keywords |
Animals; *Animals, Domestic; Bird Diseases/transmission; Birds; Disease Outbreaks; Ecology; Horse Diseases/transmission; Horses; Humans; Influenza A virus/genetics/isolation & purification; Influenza, Human/microbiology/*transmission/veterinary; Swine; Swine Diseases/transmission; Zoonoses/transmission |
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English |
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Series Editor |
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Edition |
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ISSN |
0141-0768 |
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Notes |
PMID:6752410 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2689 |
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Author |
Kida, H. |
Title |
[Ecology of influenza viruses in animals and the mechanism of emergence of new pandemic strains] |
Type |
Journal Article |
Year |
1997 |
Publication |
Nippon Rinsho. Japanese Journal of Clinical Medicine |
Abbreviated Journal |
Nippon Rinsho |
Volume |
55 |
Issue |
10 |
Pages |
2521-2526 |
Keywords |
Animals; Bird Diseases/transmission; Birds; Horse Diseases/transmission; Horses; Humans; Influenza, Human/transmission/*veterinary; Swine; Swine Diseases/transmission; Zoonoses |
Abstract |
Ecological studies on influenza viruses revealed that the hemagglutinin genes are introduced into new pandemic strains from viruses circulating in migratory ducks through domestic ducks and pigs in southern China. Experimental infection of pigs with 38 avian influenza virus strains with H1-H13 hemagglutinins showed that at least one strain of each HA subtype replicated in the upper respiratory tract of pigs. Co-infection of pigs with a swine virus and with an avian virus generated reassortant viruses. The results indicate that avian viruses of any subtype can contribute genes in the generation of reassortants. Virological surveillance revealed that influenza viruses in waterfowl reservoir are perpetuated year-by-year in the frozen lake water while ducks are absent. |
Address |
Department of Disease Control, Hokkaido University Graduate School of Veterinary Medicine |
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Editor |
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Language |
Japanese |
Summary Language |
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Original Title |
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Series Editor |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0047-1852 |
ISBN |
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Medium |
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Notes |
PMID:9360367 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2654 |
Permanent link to this record |