Covid-19: Pfizer vaccine Open Days for 12 to 16-year olds in Rome 09 Jun, 2021 Lazio region holds 'Open Day Junior' with Pfizer vaccine. The Lazio region around Rome is holding an 'Open Day Junior' initiative with the Pfizer anti-covid vaccine being offered to 12 to 16-year olds. The open days will be held on the weekends of 12-13 June and Online reservations - subject to availability - will open on Thursday 10 June at 18.00. Appointments must be booked by a parent or guardian via a dedicated section on the Lazio regional booking site. The news follows similar initiatives in other Italian regions and comes as Italy unveils plans to vaccinate 54.3 million people - or 80 per cent of the population - by September.