The National Health Service (NHS) in England has urged people aged 50 and those at risk categories to book their covid-19 jabs before next Monday when the slots are set to dry up.
NHS says that those who qualify and have not yet had the first dose of the vaccine to book an appointment by the 29th of March.
NHS England medical director Prof Stephen Powis lauded the staff for their hard work and careful planning of the vaccination program to protect people against the virus.
The NHS however says first appointments for people under the age of 50 should not be booked unless they fall into a higher priority group, such as those who are clinically vulnerable.
Booking can be done using the online national booking system for England before the 29th of March. GPs will also continue contacting eligible patients on their lists and offer vaccines to anyone who has not had one so far in that period.
Four in five people in the first nine priority groups have now received at least one dose of a vaccine.
According to the latest government figures, 28,653,523 people in the UK have received the first dose of the vaccine while 2,532,839 second doses have been given.
The UK has faulted the reduction in the Covid Vaccine supply in April to a delay in delivery of five million Oxford-AstraZeneca doses from India.
According to Indian foreign ministry sources, the country has placed a temporary halt on all exports of the vaccine amid the rising numbers of domestic cases.