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Influenza in Biological Definition

Antigenic shift

... is the process by which two different strains of influenza combine to form a new subtype having a mixture ... immune system has difficulty recognizing the new influenza strain, it may be highly dangerous. Antigenic ... natural mutation over time of known strains of influenza (or other things, in a more general sense) to ...

Avian influenza

... Avian influenza (also known as bird flu ) is a type of influenza virulent in birds . It was first identified ... 1 Infection 2 Avian influenza in humans 3 Prevention and treatment 4 ...

Outbreak

... in a region), epidemic (an unusually high number of cases in a region), or pandemic (a global epidemic). Major human epidemic viruses include influenza , Human Immunodeficiancy Virus ( HIV ), measles , and rubella . Smallpox has been eradicated as a major epidemic virus, however emerging viruses ...

RNA virus

... not propagate. Some RNA viruses: Arenaviridae Bunyaviridae Flaviviridae : Yellow fever - Hepatitis C&G Orthomyxoviridae : influenza Paramyxoviridae : Mumps Picornaviridae : Polio Reoviridae Retroviridae : Human Immunodeficiency Virus Rhabdoviridae : Rabies ...

Vaccine

... of vaccines, including those given to very young children, used thimerosal , a preservative that metabolizes into ethylmercury. It is used in some influenza , DTP ( diphtheria , tetanus and pertussis ) vaccine formulations. In the late 1990s, controversy over vaccines escalated in both the US and ...

Virus classification

... Segmented negative stranded viruses Family Arenaviridae Family Bunyaviridae - e.g. Hantavirus Family Orthomyxoviridae - influenza viruses Unassigned genera: Genus Deltavirus ; type species: Hepatitis delta virus Genus Ophiovirus ; type species: Citrus psorosis ...

Virus evolution

... can adapt to changes in their environment within months. Virus evolution is an important aspect of the epidemiology of viral diseases such as influenza , HIV , hepatitis , and many others. It also causes problems in the development of successful antiviral drugs , as resistant mutations often ...
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