FRANKFURT, July 9 — The European Medicines Agency today said it was too early to determine whether more than the two shots that are currently required for most approved Covid-19 vaccines would be called for, saying it was confident for now that the established regimen was sufficient.

Pfizer and partner BioNTech unveiled plans yesterday to ask US and European regulators to authorise a booster dose following its two-shot regimen, based on evidence of greater risk of infection six months after inoculation and the spread of the highly contagious Delta variant. — Reuters