Covid-19 Vaccine Booster Shots Raise Tough Issues for Health Authorities

May 20, 2021

(Wall Street Journal) – While most countries are still cranking up their vaccination drives, some are already making plans to deliver millions of booster shots into arms later this year. Concerns that Covid-19 may morph into a seasonal menace are driving preparations in the U.S., the European Union and the U.K. for a winter vaccine booster program. The plans are precautionary, according to public-health officials, and it isn’t yet certain they will be put into operation or at what scale. Disease experts say the need for a winter vaccine drive will depend on whether vaccine-induced immunity fades over time and if the current crop of vaccines are effective against virus variants. (Read Full Article)