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“First used in the 1960s in the former Soviet Union, intranasal influenza vaccines have proved to be effective. They are currently being manufactured in the U.S. and India.” https://t.co/PRKB2M2LH6
“First used in the 1960s in the former Soviet Union, intranasal influenza vaccines have proved to be effective. They are currently being manufactured in the U.S. and India.” https://t.co/PRKB2M2LH6