After nearly 10 months of pandemic in Spain, the first doses of the Covid-19 vaccine developed by the Pfizer and BioNTech laboratories have begun to be administered to the sector of the population most at risk: seniors who live in homes and their carers.

Top US government scientist Anthony Fauci warned on Sunday the worst of the pandemic may be yet to come, driving the country to a “critical point” as holiday travel spreads the coronavirus.