Stephen Cameron, 42, was working for national carrier Vietnam Airlines when he tested positive for coronavirus in March and went on to become seriously ill, spending 68 days on a ventilator.
Mr Cameron, from Motherwell, North Lanarkshire, subsequently became known nationwide as Patient 91 after his case sparked something of a media sensation in the south-east Asian country, which is home to some 95 million people and is yet to record a single Covid-19 death.
Speaking to BBC News after returning to Scotland on July 12, Mr Cameron warned he was “a living example of what this virus can do and how it is serious”.
“People might grumble about having to put on gloves or social distancing two metres apart… but I contracted it and I was under for 10 weeks on life support,” he said.
“People can’t be blase about this until we have eradicated it.”
Mr Cameron is facing a long and arduous period of rehabilitation, according to Dr Manish Patel, the respiratory consultant who has been responsible for his care since his return to Scotland.
“People say going into ITU is like running a marathon. In Stephen’s case, I think he’s run multiple ultra-marathons,” Dr Patel told the BBC.
“We don’t have much experience of people being on a ventilator for more than a month and a half,” he added.
Mr Cameron said he had been unsure if he would be able to walk again when he came round after weeks of being ventilated – for most of which he was also reliant on a life support machine.
“When I first woke up I thought was I paralysed? I didn’t know if I was paralysed for life, because I couldn’t feel my feet,” he said.
Despite still struggling to walk and having lost 30kg in weight while in a medically-induced coma, the 42-year-old is now aiming to pilot a plane again by “early next year”.
Coronavirus in numbers: UK confirmed deaths at 45,752
Describing his ordeal as “mind-blowing”, Mr Cameron also said it was “just incredible” that his case had attracted such a media following in Vietnam, which has had fewer than 500 confirmed Covid-19 cases.
“The vast majority of the country knew about Patient 91, which was my moniker,” he added.
“On the equivalent of the 10 o’clock news they had somebody with my X-rays, my CT scans, my stats and actually talking through them in maybe a five-minute segment.”
He added: “When I left the hospital, there were people already queuing up at 8.30am to see me away, which I thought was just incredible.
“When we went through the lobby it must have been about 10-deep with people, everybody had their phones out.”
British Foreign Secretary Dominic Raab has thanked his counterpart in Vietnam, Foreign Minister Pham Binh Minh, for the treatment of Mr Cameron and several other British Covid-19 patients in the country since the former returned to the UK.