Coronavirus patients have continued to suffer from fatigue, breathlessness and forgetfulness more than 100 days after contracting the bug.
Many Covid-19 survivors have found that they are not back to normal months after they tested positive.
Louise Nicholls, from Litherland in Liverpool, is one of those people who found themselves suffering from curious symptoms long after she should have been back to normal, the Liverpool Echo reports.
She was told she had coronavirus by her doctor on April 1 having gone in search of medical help after suffering from a number of respiratory symptoms.
Before she fell ill, the 32-year-old was in "really good health", lifting weights three times a week and going horse riding, in preparation for her wedding.
Louise said: "I was trying to do my workouts and I was getting really short of breath.
"I couldn't put my finger on what was going on but it got worse every day. My chest started getting tighter and my lungs were burning.
"I didn't have a cough or a fever but I had shortness of breath and I was waking up with night sweats."
Louise said her symptoms were dismissed as anxiety by those around her at first, but when her symptoms got worse she phoned the doctor who said it sounded like coronavirus.
Louise said: "My doctor said it sounds like covid. She said 'you're young and fit, you'll be over it in a few weeks' and sent me on my way."
Louise's breathing continued to get worse and she was given a steroid inhaler, which she is still taking today.
She said: "I was given a steroid inhaler to widen my airways. I don't have asthma but I have had some asthmatic tendencies in the past.
"I couldn't even close my eyes to go to sleep because my body would forget to breathe because it was that hard.
"I would stay up until 4am not being able to breathe. That's when I rang 111 and they gave me some steroid tablets to bring down the inflammation."
She added: "It's really lonely and isolating, there's been no support."
Although Louise feels much better than she did at one time, she is still struggling with her breathing today and is continuing to use her inhaler.
She said: "I feel much better than I was but I can't push myself too much.
"I can only walk around the block. I used to do kickboxing and horse riding but I can't do that now.
"My chest feels tight if I don't take my inhaler every day."
Louise has recently set up a Facebook group for people in Merseyside who are still suffering from the effects of the virus months later.
Many others across the country have similarly been flawed by the virus.
Professor Paul Garner has suffered symptoms of Covid-19 100 days after contracting it.
The Liverpool School of Tropical Medicine epidemiologist, said he was fit and healthy before he contracted the virus, doing yoga and running between 30 and 40km a week.
But now, even a 15 minute bike ride can leave Paul bed bound for 24 hours.
Paul said: "It's a mind boggling condition, it really is.
"You've got people coming out of this infection and everyone is a bit different.
"The main problem for me has been this horrible fatigue, it's much like chronic fatigue syndrome but it's not getting to that yet.
"I am unable to be out of bed for more than three hours at a stretch. My arms and legs are permanently fizzing as if injected with Szechuan peppercorns, I have ringing in the ears, intermittent brain fog, palpitations, and dramatic mood swings.
"I was running 30/40km a week before and doing yoga. Now I can only walk around 4km and if I do 20/30 minutes of yoga a coupe of days in a row then my symptoms come back.
"I get aches and pains in my muscles and pins and needles in my arms and legs.
"On Thursday it was my sister's birthday and I cycled to Princes Park. It was about 15 minutes cycling in total and the next day I felt really unwell. I was in bed for 24 hours.
"This disease really gives your body a pummelling and bashes you around inside."
Another symptom which Paul and other long haulers have been left suffering from is forgetfulness and the ability to say certain words.
He added: "I went out shopping the other day and came home with some cans of baked beans. I couldn't find where I had put them and then I found them in the fridge.
"People are also forgetting how to say certain words. I couldn't say exclude."
Chris, 37, a firefighter from Kirkby and his wife Ingrid, 34, have both been left suffering from some symptoms of the virus over three months later.
For Chris, the symptom he has been left with is mainly shortness of breath, which means he is still unable to do certain things.
His wife Ingrid is suffering from severe fatigue, meaning she has to spend half of the day resting in bed, with day to day tasks leaving her feeling exhausted.
Chris said: "I was off work on annual leave and I went back for the first time and before I even finished my shift my wife called me in floods of tears.
She said 'I can't cope, I can't do this.' So I spoke to my manager and they said yes just go.
"It set her back almost a week. It seems the biggest thing people can do is get some rest straight away and don't try to work through it.
"She's had very little advice or support. She's been on the phone to a specialist today for £40 an hour to get some advice.
"She's very worried. She just wants to be able to do things with the children . People seem to think that you should just get out and go for a walk and that everyone feels tired but it's so much worse than that.
"We're just hoping for the best and that this doesn't become chronic."