Fifth Covid wave - causes, restrictions and FAQs

Catalonia is in the midst of its fifth wave of the coronavirus pandemic. Faced with record numbers of daily cases and rising hospitalizations the government has introduced a 1am to 6am curfew for the worst-hit towns and cities, including Barcelona, affecting some 80% of the population.  Enric Alvarez, a member of the BIOCOM-SC research team at UPC considers the reasons behind this dramatic rise in transmission, especially among young people, and whether it could have been predicted or avoided.  Cristina Tomàs White and Guifré Jordan join Lorcan Doherty to discuss the latest figures and restrictions, and respond to readers' questions about vaccinations, quarantining and EU digital Covid certificates.  This week's Catalan phrase is "ensopegar dues vegades amb la mateixa pedra", which means to stumble over the same stone twice.