Types of virus shapes
By: Michelle Taylor
This virus structure is a conventional icosahedral or helical structure that is surrounded by a lipid bilayer membrane. The influenza virus is a spherical virus. There are three types of influenza virus, type A, B, and C. Type A is the most common and infects multiple species type C also infects multiple species but is much less common. Type B exclusively infects humans, but it has been found that some seals can also be infected.