The top five common COVID symptoms for people who have been vaccinated include a headache and runny nose, according to a new report.
The Zoe app, which is used to study the symptoms of COVID-19 and track the spread of this virus, has revealed the most reported signs of coronavirus infection for those with at least one vaccine jab.
In order of most common, they include a headache, runny nose, sore throat, sneezing and persistent cough.
For those double-vaccinated, the symptoms are similar, except there isn't a persistent cough in the top five.
The Zoe app website says: “Generally, we saw similar symptoms of COVID-19 being reported overall in the app by people who had and hadn’t been vaccinated.
“However, fewer symptoms were reported over a shorter period of time by those who had already had a jab, suggesting that they were falling less seriously ill and getting better more quickly.”
On Wednesday, vaccines minister Nadhim Zahawi celebrated the milestone of three-fifths of UK adults (43,448,680) having received both vaccine doses.
He said more than 14,000 lives have now been saved by vaccines, while 44,500 hospital admissions had also been averted in England, including 2,500 in the past two weeks.
Zahawi added he is confident the government will meet its target of double vaccinating two-thirds (66%) of adults by 19 July.
The number of people currently with a single vaccination is 31,908,103.
A recent analysis by Public Health England suggests COVID-19 vaccines are highly effective against hospitalisation from the Delta variant of coronavirus after both doses, with the Pfizer-BioNTech vaccine 96% effective and the Oxford-AstraZeneca vaccine 92% effective.
The vaccines were protective for those who got both doses but were less so among those who got one dose.
Watch: Nadhim Zahawi celebrates milestone of three-fifths (60%) of UK adults being fully vaccinated
The Zoe study also identified the top five reported symptoms for those who are unvaccinated.
They include a headache, sore throat, runny nose, fever, and persistent cough.
At the moment, the NHS lists "a new continuous cough, a high temperature, loss of or change in smell or taste" as the main COVID-19 symptoms.
The Zoe study indicated a loss of smell now ranked number nine on the list, which could show symptoms are changing with emerging variants.
The Imperial College London React study also showed other symptoms had been linked to COVID-19, including muscle aches, chills, headaches and appetite loss.
But on Wednesday, during a Downing Street press conference, Public Health England's (PHE) head of immunisation Dr Mary Ramsay told reporters she was not “convinced yet” the Delta strain was causing different signs of infection.
She said: "I don't think any evidence that we are missing cases."
Watch: What you need to know about COVID-19 variants