There had initially been no new recorded cases in the county borough for six consecutive days since Tuesday, June 2, when two people tested positive.
The data has since been updated to show two people testing positive on June 6 and another positive result on June 7.
Not everyone who has Covid-19 is necessarily tested. For example, people who are displaying no symptoms may have it but not put themselves forward for testing.
On June 24, there were 125 new cases reported in Wales, meaning 15,466 people have tested positive for Covid-19 out of 165,955 tests.
It was announced that as of June 21, that one more person had died from the virus taking the total in Wales to 1,478.
Across the United Kingdom, the total death toll of those who have tested positive is 42,647 as of June 21.
However, there have been 53,077 deaths (up to June 5) where Covid-19 has been mentioned on the death certificate.
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