European health officials say it's too early to consider giving a fourth dose of messenger RNA coronavirus vaccines to most people, but say an extra booster can be administered to those over age 80.
In a joint statement on Wednesday, the European Medicines Agency and the European Centre for Disease Prevention and Control said they had reviewed data for a fourth dose of the COVID-19 vaccines made by Pfizer-BioNTech and Moderna Inc. They included real-world data from Israel, where research has shown that a second booster provides only marginally higher protection.
