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There are four types of influenza viruses: A, B, C and D. Human influenza A and B viruses cause seasonal epidemics of disease almost every winter in the United States. Influenza type C infections generally cause a mild respiratory illness and are not thought to cause epidemics. Influenza D viruses primarily affect cattle and are not known to infect or cause illness in people.
A, B and C cause a severe upper respiratory infections. These are more than 'just a cold.'
What else can I help you with?
What is the difference between influenza type A and type B?
Influenza type A and type B are two different strains of the influenza virus. Type A is more common and has the ability to infect animals, while type B primarily infects humans. Type A viruses are categorized into subtypes based on two proteins on the surface of the virus, hemagglutinin (H) and neuraminidase (N), which helps determine their potential to cause pandemics.
What type of virus is influenza?
Influenzavirus A, Group v virus, Orthomyxoviridae, an RNA virus. Specifically:Order: MononegaviralesFamily: OrthomyxoviridaeGenus/Genera: Influenzavirus ASpecies/Type: Influenza A virusSee the related questions for more details.Orthomyxovididae = influenza viruses
What is the difference between Influenza A and Influenza B?
Influenza A and Influenza B are two different types of flu viruses. Influenza A is more common and can infect both humans and animals, while Influenza B mainly affects humans. Influenza A has more subtypes and can cause more severe outbreaks, while Influenza B typically causes milder illness.
Why influenza A and influenza B cause epidemics but influenza C doesn't?
Influenza C viruses are also found in people. They are, however, milder than either type A or B. People generally do not become very ill from the influenza type C viruses. Type C flu viruses do not cause epidemics. Almost all adults have been infected with C but it just doesn't have the ability to cause epidemics and it doesn't fit the term epidemic.
Who invented the vaccine of haemophilus influenza type B?
Maurice Ralph hilleman invented it....
Are all influenza Type A viruses the Swine Flu?
No, the pandemic A-H1N1/09 "swine flu" is just one of many Type A influenza strains. It is also one of many H1N1 flu subtypes. Besides Type A influenzas, there are also influenza Types B and C in humans.
What are the differences between influenza A and influenza B viruses?
Influenza A and influenza B viruses are both types of the flu, but they have some key differences. Influenza A viruses can infect both humans and animals, while influenza B viruses mainly infect humans. Influenza A viruses are more likely to cause pandemics and have more subtypes, while influenza B viruses have fewer subtypes and typically cause milder illness.
What does the A stand for in Influenza A virus?
The A and B in influenza are simply different types of influenza. * Type A: seasonal epidemics. This sub-type is based on changes in surface antigens hemagglutinin and neuraminidase. In humans subtypes H1-H3 and N1-N2 have circulated since 1918 pandemic (due to H1N1). In the last 3 decades the circulating types have been H3N2 and H1N1. * Type B: sporadic outbreaks (long term care facilities)
Which type of influenza is the worst?
Influenza A is generally considered the worst type due to its ability to cause more severe illness, pandemics, and higher transmission rates compared to Influenza B and C. Influenza A viruses have more genetic variability, allowing them to rapidly evolve and potentially develop resistance to antiviral medications.
What is the difference between flu A and flu B?
Influenza A and influenza B are two different types of the flu virus. Influenza A is more common and can infect both humans and animals, while influenza B mainly affects humans. Influenza A has more subtypes and can cause more severe outbreaks, while influenza B typically causes milder symptoms.
What is Hib disease caused by?
Hib disease is an infection caused by Haemophilus influenza type b (Hib).
What is the genus and species category for influenza?
it is a negative single strand RNA virus of family orthomyxoviridae having four group: influenza A, influenza B, influenza C, and thogoto virus. containing 7to 8 segments of linear rna with a genome length b/w 12,000 to 15,000.
