A fifth of Britons with at least one symptom of coronavirus in the past week have not completely self-isolated, according to new research.
The YouGov survey found that 12% of Britons surveyed had experienced a common symptom of COVID-19 in the last seven days.
They include fever, dry cough, loss of taste or smell, and shortness of breath.
When asked what action they took over the next few days, 21% of those with at least one coronavirus the symptom indicated that they were only sometimes, rarely or never isolated.
NHS advice states that people should stay at home for seven days if they have a high temperature or a continuous cough.
Anyone living with someone with these symptoms was asked to self-isolate for 14 days.
The government said earlier this month that the loss of taste and odor would not add to the list of symptoms people should watch for when testing for coronavirus.
This is despite research from King’s College London which indicates that almost 60% of COVID-19 patients have loss of taste and odor.
Health Secretary Matt Hancock said he lost his sense of taste when he was hit by COVID-19.
Some 1,650 Britons participated in the YouGov survey after partnering with the Institute of Global Health Innovation at Imperial College London to examine how people around the world are adhering to public health advice to combat the coronavirus.
Thirteen countries were included in the first phase of the study and it is expected to extend to 16 other parts of the world.
Tests reported in the UK were the lowest of any country, with only 1% of those surveyed saying they had been tested and 1% saying that someone in their household had been tested.
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Britons seem to stay indoors as advised, leaving the house on average only 0.77 times a day, compared to 1.08 times the international average, the study found.
Over 90% of Britons surveyed said they regularly cover their noses and mouths when coughing or sneezing and avoiding social gatherings, crowded areas and public transport.
The results of the survey will be made available to public health agencies free of charge so that they can assess which measures are working.