What Is Influenza A?
3. Type C Influenza
The third type of flu virus that can infect people is type C influenza. This type is even milder than the other types, but there is still a risk of potentially severe complications arising, including bronchitis and pneumonia. Type C is also not going to cause any pandemics.
The fourth type of influenza virus, type D influenza, is found only in animals and will not infect people as far as we know. The virus tends to infect cattle although it can also infect other animals including mice. Fortunately, the effects that type C influenza has on its host are usually only mild.
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