Them: Is there any other vaccine in history that required three doses in a year and yet still didn’t prevent transmission of the virus it was meant to protect against?

Me: Your childhood vaccinations would like a word with you.

Before I forget, reminder that your TDap: Tetanus-Diphtheria-Pertussis (every 10 years) are technically a repetitive vaccine series or rather boosters during adulthood. HPV is another vaccine that could fit here as well.
“Even the measles vaccine, which is incredibly effective, fails to protect about 3% of vaccinated individuals who are exposed to the virus. Jonas Salk's polio vaccine-hailed a medical miracle- was 80% to 90% effective at preventing paralysis caused by the polio virus.”
“Breakthrough cases don’t mean that the vaccines aren’t working.”https://t.co/FNVOaInHaW

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