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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.'
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What is the difference between influenza type A and type B?
Influenza Type A is your typical flu...its the one everyone gets. Influenza Type B is much slower than type A and can last twice as long with the symptoms gradually coming on.
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
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 is Hib disease caused by?
Hib disease is an infection caused by Haemophilus influenza type b (Hib).
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)
Why does influenza virus cause recurrent infections?
The influenza virus doesn't always cause recurrent infections. There are many different strains of the flu and there are two types, which are Type A ad Type B. The flu is a virus that has to run its course.
What is the difference between Flu A and Flu B?
They are caused by two different kinds of viruses. There are three types of influenza viruses that have been classified according to the types of proteins they have. There are Type A, Type B, and Type C influenza viruses. Type A and B each have many different strains. Type C does not.Type A influenza is one of the more common types we see in the seasonal flu among humans and it is also a very common type that many other animals get. It has subtypes and strains that differ, which is why having one subtype will not give you immunity from all the other subtypes and strains.Type B influenza is also a common type among humans and is found only in humans. It is not divided into subtypes but there are multiple strains.Type C has been found in humans, pigs, and dogs. The symptoms are usually very mild, milder than those of Type A and B influenza viruses, and it typically doesn't cause epidemics. It is not divided into different subtypes or strains.
How many different virus strains does the 2012-2013 seasonal influenza vaccine contain?
Two type A viruses and one Type B virus.
Which type of influenza is the worst?
Influenza A virus subtype H3N2
Is Swine Flu a type of influenza?
Yes, it is the Influenza caused by the Type A H1N1/09 virus.
