EU drug regulator says more data needed on impact of Omicron on vaccines

The European Union's drug regulator said on Tuesday more data was needed to understand the impact of the highly contagious Omicron coronavirus variant on currently approved COVID-19 vaccines, and expressed doubt on the need for a fourth booster dose.

Repeated vaccinations within short intervals would not a represent a sustainable long-term strategy, the European Medicines Agency's Head of Vaccines Strategy, Marco Cavaleri, told a media briefing.