Now the pandemic has lasted for over a year, there are a number of symptoms that can show if you have, or had the virus.
Currently, the NHS have only officially listed three different signs that can show an individual has coronavirus, but a number of other conditions have been reported in patients across the globe.
There are now said to have been 4.3 million cases within the UK, however as some people show no symptoms, the actual figure is believed to be much greater.
With just 343 new cases reported in Scotland on Sunday it is clear that transmission is declining, but the First Minister has warned Scots "not to be complacent" as restrictions ease.
This week, GloucestershireLive has reported a full list of some of the tell-tale signs that you have had coronavirus, in some cases without even realising it.
From brain fog to stomach aches, you can find the full list of symptoms below.
Post coronavirus symptoms
Red eyes
The College of Optometrists said: "It is recognised that any upper respiratory tract infection may result in viral conjunctivitis as a secondary complication, and this is also the case with Covid.
"However, it is unlikely that a person would present with viral conjunctivitis secondary to Covid without other symptoms of fever or a continuous cough as conjunctivitis seems to be a late feature where is has occurred."
A cough that sounds "different"
We all know that a persistent dry cough is one of the key symptoms of coronavirus.
But many have begun to describe a Covid cough as sounding different to one you may usually get.
The cough is persistent, harder to combat and, for smokers, will be different to a usual 'smoker's cough'.
It is likely to last for at least half a day.
Brain fog
Thea Jourdan told The Daily Mail that she first thought she may have been infected when she got a tickle in her throat and a headache.
The mum-of-three then began to experience brain fog.
"Initially I felt exhausted, as if I was dragging myself through treacle and had no choice but to go to my bed. I had no meaningful cough and I wasn’t running a fever," the Hampshire woman said.
"But I had a peculiar sensation of something settling deep within my lungs, almost like breathing in talcum powder."
Being hot to the touch
A high temperature is considered a fever when it reaches 37.7C (100F).
Though numbers can vary for different people.
If you feel hot to the touch, especially on your chest or back, then you are likely to have this symptom.
Out of breath
If you're suffering with a tight chest or difficulty breathing, it may be a sign you have coronavirus.
Dyspnea - the term for when someone has difficulty breathing - may be coupled with a tightness in the chest, rapid breathing and heart palpatations.
However, most young people or those without pre-existing health conditions are unlikely to experience this symptom.
Sudden loss of smell or taste
The British Association of Otorhinolaryngology warned that losing your sense of smell and taste may mean you have Covid.
The ear, nose and throat specialist recommended anyone with such symptoms self-isolate immediately.
It has been suggested that the phenomena may be caused by the coronavirus killing cells in the nose and throat.
"Evidence from other countries that the entry point for the coronavirus is often in the eyes, nose and throat areas," the association said in a statement.
"We have also identified a new symptom (loss of sense of smell and taste) that may mean that people without other symptoms but with just the loss of this sense may have to self-isolate - again to reduce the spread of the virus."
Stomach ache
As with a loss of appetite, enduring a tummy ache may easily be passed off as a sign of something more innocuous.
However, a newly published study by the American Journal of Gastroenterology links tummy problems to Covid.
They found that 48.5% of 204 people who have been infected by the coronavirus in China's Hubei province had digestive symptoms such as diarrhoea.
Tiredness
Jaimuay Sae-ung, 73, was the first Thai national to contract coronavirus in December last year.
Despite having underlying health conditions, including a heart problem, Jaimuay survived the illness after doctors isolated her at a hospital in Thailand for treatment.
"I only knew (I had coronavirus) after I came to the hospital," the mother of seven told Sky News.
"I felt a bit sad, a bit shocked, tired and fatigued and I couldn't eat."
