The influenza vaccine is manufactured by several companies and is man made. Much of the process is automated (with computers and machines) and occurs in factory or manufacturing facility.
HOW DO SCIENTISTS MAKE THE VACCINE? HOW IS THE VIRUS KILLED?
Influenza vaccine is typically manufactured by growing the virus in chicken eggs. Then, the virus is either killed ("flu shot") with a chemical. This is the usual process for developing the injectable vaccines.
Attenuated ("intra-nasal" or FluMist in the US) vaccines are technically "live". However. live-attenuated vaccines are made from pieces of live virus and the vaccine is made such that it cannot cause influenza illness or sickness.
This answer is not intended as and does not substitute for medical or legal advice. The information presented in this posting is for patients’ education only. As always, I encourage you to see your personal physician for further evaluation of your individual case.
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