نتایج جستجو برای: orthomyxoviridae
تعداد نتایج: 8630 فیلتر نتایج به سال:
INFLUENZA VIRUS CAN SURVIVE, AND CAN BE PROPAGATED IN IMMUNOLOGICAL ENVIRONMENTS INDUCED IN MICE BY VACCINATION WITH THE HOMOLOGOUS STRAIN OF VIRUS: survival was associated with the emergence of variants which differed from the parent strain in antigenic characteristics. The data concerning hemagglutinating activity of the variants, on the one hand, and of the antigenicity, on the other, are co...
This paper will address the current pandemic threat from avian and other influenza viruses, the treatments available, federal, state and local response and planning, and the policy implications should a pandemic occur. The paper concludes with some discussion about where we are and where we need to go, and some recommendations for policymakers and legislators grappling with the issue of pandemi...
Data are presented which indicate that the forces of attraction between influenza virus and chicken erythrocytes are governed by an orderly mechanism which effects a proportional distribution of virus between erythrocytes and suspending fluid. For a unit mass of erythrocytes, the ratio of combined (sorbed) virus to free (unsorbed) virus is sufficiently constant over a wide range of virus concen...
Emergence of influenza viruses from the animal reservoir is a permanent challenge. The rapid description and immediate sharing of information on these viruses is invaluable for influenza surveillance networks and for pandemic preparedness. With the help of data generated from the World Health Organization Collaborating Centre for Reference and Research on Influenza at the United States Centers ...
The name•ginfluenza C •hhas first been given by Francis and his colleagues to a case of influenza in Ann Arbor, Michigan, in 1950, from which theyy isolated an influenza-like virus strain JJ, different, however, antigenically from any known type of influenza virus.) The Ann Arbor workers are, however, not the first discoverers of this type of virus. In 1947, Taylor2) isolated a strain of virus ...
During 2001-2014, predominant influenza A(H1N1) and A(H3N2) strains in South America predominated in all or most subsequent influenza seasons in Central and North America. Predominant A(H1N1) and A(H3N2) strains in North America predominated in most subsequent seasons in Central and South America. Sharing data between these subregions may improve influenza season preparedness.
CDC collects, compiles, and analyzes data on influenza activity year-round in the United States (http://www.cdc.gov/flu/weekly/fluactivitysurv.htm). The influenza season generally begins in the fall and continues through the winter and spring months; however, the timing and severity of circulating influenza viruses can vary by geographic location and season. Influenza activity in the United Sta...
A new influenza virus, genus D, isolated in US pigs and cattle, has also been circulating in cattle in France. It was first identified there in 2011, and an increase was detected in 2014. The virus genome in France is 94%-99% identical to its US counterpart, which suggests intercontinental spillover.
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