How about "If the pharma companies didn't know enough about their vaccines to inform you that boosters would be required in a few months, why do you believe them when they say it is 'safe and effective' and will have no long term negative effects on your health?"
How about "If the pharma companies didn't know enough about their vaccines to inform you that boosters would be required in a few months, why do you believe them when they say it is 'safe and effective' and will have no long term negative effects on your health?"