People in their late 30s can book a Covid jab from Thursday, say NHS chiefs. Appointments will open to those aged 38 and 39, in the latest rollout of the programme. Under new advice from the Joint Committee on Vaccination and Immunisation (JCVI) those in their 30s will be offered Pfizer or Moderna, rather than AstraZeneca. Around one million people will be sent text messages from Wednesday, so they can access national booking services, which will send them to vaccine sites with these jabs. Almost three quarters of people in their 40s have now had their first dose. More than two thirds of adults have now had one dose of vaccine, while one third have had two. The group will be offered Pfizer or Moderna due to the extremely rare blood clots, including some affecting the brain, linked with the AstraZeneca vaccine. The same recommendation has been made for pregnant women, who will also be able to access national booking service from Thursday, to ensure they are sent to sites with Pfizer and Moderna.