A 31-year-old female asked:
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please explain how healthy vaccinated people can still die from influenza?

2 doctor answers
Dr. Nestor Del rosario
33 years experience Addiction Medicine
Perfection: All drugs and vaccines are studied for their efficacy by working in majority of people, not in 100% of people, and not perfect. For example, flu vaccine works in 85% of people to protect them from flu, or if they still contract flu, it makes the symptoms milder. It also only works for the flu being vaccinated for and for a few months of that year. So, there is no perfect vaccine or med for all.
Answered on Jan 12, 2017
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Dr. Martin Raff
55 years experience Infectious Disease
Flu vaccine: No immunization is 100% even assuming that the strain of influenza virus infecting people was contained within the vaccine. This virus undergoes drifts and shifts in its structure that make it resistant to the antibodies that a person has. That is why the vaccine may change yearly and you need a new shot each year. People may have immune defects preventing them from developing protective antibody.
Answered on Jan 12, 2017
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