MILLIONS of people across the country are now eligible to receive their Covid-19 booster vaccine.

The roll-out began on September 20, and more than four million people have already received the additional jab since then, according to the NHS. 

In the south east, there have been 6,237,381 second doses of the vaccine and 601,449 booster jabs administered.

Dr Nigel Watson, clinical director for the Hampshire and Isle of Wight Covid-19 Vaccination Programme, said: “We continue to offer vaccination to everyone who is eligible and are contacting people for their boosters when they are due.

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"Anyone who gets COVID-19 can become seriously ill or have long-term effects, which is why we would encourage anyone who is yet to receive a first or second dose to step forward, and anyone contacted for a booster dose to attend their appointment."

With that in mind, here is everything you need to know about the top-up vaccinations.

Who can receive the booster jab?

The third jab will be offered to everyone over 50, as well as younger people with health conditions that put them at greater risk of becoming very unwell from the virus. 

The Joint Committee on Vaccination and Immunisation, JCVI, (an independent expert advisory committee) created a list last year of who should be prioritised for the vaccine.

The priority list, in order of vaccination, is as follows:

1. Residents in care homes for older adults and their carers

2. 80-year-olds and over and frontline health and social care workers

3. 75-year-olds and over

4. 70-year-olds and over and clinically extremely vulnerable individuals

5. 65-year-olds and over

6. 16- to 64-year-olds with serious underlying health conditions

7. 60-year-olds and over

8. 55-year-olds and over

9. 50-year-olds and over

The NHS has said a booster jab will help improve the protection from the first two doses of the vaccine, reducing the chances of becoming seriously ill. 

Figures from the health service show 1.3 million people in England, aged 80 and over, received a booster dose by October 17.

It is hoped that the number of those having the jab will continue to rise as time progresses.

NHS medical director Professor Steve Powis said: “As we head into winter, the NHS is inviting everyone eligible for a booster vaccine to come forward and book in.

“Thanks to NHS staff nine in 10 people have had a first dose, saving thousands of lives and now over four million boosters delivered in the first month roll out.

“I would urge anyone receiving an invite this week to book in as soon as possible – the booster dose is proven to significantly increase protection against COVID and will provide vital protection this winter.”

How can I get the booster jab?

When you are eligible for the booster you should be notified by text, letter or by your GP to arrange a booking.

Over 5.5 million people have already been invited by text, email and letter encouraging them to book through the National Booking Service.

But, if you think you are eligible but have not been notified, you can book online via the NHS website or by calling 119.

Which vaccine will I receive for my booster? 

All third doses will use an mRNA vaccine, which is either Pfizer or Moderna.

The vaccine will be delivered in a half-dose.

This follows evidence that a full dose is unnecessary for complete protection from the virus.

The above also applies to people who received the Oxford/AstraZeneca vaccine for their first two jabs.