"Table 1: Official reported estimates of the percentage of the population testing positive for COVID-19, UK countries"
"Estimated percentage of the population testing positive for the coronavirus (COVID-19) on nose and throat swabs, week ending 15 May 2021, UK"
Country,"Estimated
average %
of the
population
that had
COVID-19","95% Credible
Interval",,"Estimated
average
number
of people
testing
positive
for
COVID-19","95% Credible
Interval",,"Estimated
average
ratio of
the
population
that had
COVID-19","95% Credible
Interval",
,,Lower,Upper,,Lower,Upper,,Lower,Upper
England,0.09%,0.07%,0.11%,"49,000","38,800","60,300","1 in
1,110","1 in
1,410","1 in
900"
Wales,0.02%,0.00%,0.07%,700,100,"2,000","1 in
4,430","1 in
26,110","1 in
1,530"
"Northern
Ireland",0.06%,0.01%,0.16%,"1,200",300,"2,900","1 in
1,550","1 in
6,810","1 in
630"
Scotland,0.05%,0.02%,0.10%,"2,700","1,000","5,200","1 in
1,960","1 in
5,160","1 in
1,010"
Source: ,Office for National Statistics – Coronavirus (COVID-19) Infection Survey
Notes
1,All estimates are subject to uncertainty given that a sample is only part of the wider population. The model used to provide these estimates is a Bayesian model: these provide 95% credible intervals. A credible interval gives an indication of the uncertainty of an estimate from data analysis. 95% credible intervals are calculated so that there is a 95% probability of the true value lying in the interval.
2,Official reported estimates are plotted at a reference point believed to be most representative of the given week.
3,These ratios do not represent a person's risk of becoming infected because risk of infection depends on a number of factors such as contact with others or whether a person has been vaccinated.