What Is Influenza A?
2. Type B influenza
Type A influenza can be found in animals and people. Some well-known examples include swine flu and bird flu. It is not common for the virus to be spread through different species, but it can happen. Type B influenza, however, can only be found in people. It is also not usually as severe as Type A influenza can be.
Type B influenza is not divided into subcategories. It will also not be responsible for pandemics. The symptoms of type B influenza will typically appear within 4 days from the day of infection, and they will usually last for up to around 7 days. Although the virus is less severe than type A influenza, it will still be a danger in a small percentage of cases.
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