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The first people in Britain - and the world - started receiving their first doses of the Pfizer/BioNTech vaccine on 8 December, but obviously it is going to be quite a while before everyone has received their jab.
So, with that in mind, Omni's virus calculator will allow you to input your age, as well as a few other details, to work out how many people are in front of you to receive the vaccine.
It takes in considerations such as whether you are pregnant, or a care home or NHS worker, and whether you were asked to shield during the lockdown period.
Once you've given them the crucial details, they'll give you a notional number as to where you stand in terms of vaccine priority.
So far, it's been the elderly, the most vulnerable, and those working for the NHS that have been receiving the vaccine, and that seems like a fairly reasonable and fair thing to do, but eventually the government hopes that everyone who can have it will be protected by from the virus.
There are around 800,000 doses of the Pfizer vaccine in the country at the minute, but there are 340 million doses on order from the various vaccines that are awaiting approval from the medical regulatory bodies.
Vaccines Minister Nadhim Zahawi confirmed earlier today that 137,897 people have received a jab so far, but remember they'll all have to have two, as two doses must be administered a few weeks apart in order to offer the best protection.
Zahawi said that it had been a 'really good start to the vaccination programme'.
According to the Omni calculations, a 45-year-old person with an underlying health condition that works in healthcare should expect to receive their vaccine between 20 December and 16 January.
However, there are many things to consider.
Firstly, it's been slow going, thus far. The government targeted vaccinations for one million people per week, but have only achieved 69,000.
That could mean longer waits for everyone who isn't high on the list.
At that rate, it would take 15 years, so they'll have to step it up.
Secondly, we can't be sure how many people will take up the vaccine offer. Omni reckons about 70 percent, based on the uptake of flu vaccines, but it might be lower than that.
Regardless, it's a broad way of working out roughly when you can expect to receive the call. The creators have said that they expect one million per week to receive the vaccine at some point in the new year.
If you do receive the call to have your jab, you'll be contacted by the NHS to offer you an appointment. Don't call them, they've probably got enough on just now.
You can find out roughly where you stand by using the Omni calculator here.
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