An influenza vaccine can be made by growing the viruses in chicken eggs.
The viruses are extracted in liquid from the eggs and inactivated. The purified egg extract containing the viruses is then used as the vaccine.
What is a side-effect of using this vaccine in some people?
1 )
An auto-immune condition could occur.
An immune response to egg antigens could occur.
3 )
The egg antigens could cause infections.
4 )
The influenza viruses could cause infections.
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