The UAE reported 1,111 new cases of Covid-19 on Sunday after 154,882 tests were carried out in the previous 24 hours.
The tally of infections now stands at 142,143.
Officials said 683 people had recovered from the virus for a total of 138,291.
No deaths were reported, leaving the toll at 514.
The total number of active cases in the Emirates is 3,338.
It fell below 2,000 on Wednesday but the number went up after new infections exceeded recoveries.
The UAE has carried out more than 14 million tests since the outbreak began, as part of a mass-screening strategy to limit the spread of the virus.
In other developments, Mubadala Healthcare – which includes Cleveland Clinic Abu Dhabi and Abu Dhabi Telemedicine Centre – has pledged key investment to the approved tests of an immune-suppressant drug being carried out in the UK.
The trial, known as Arcadia, follows pre-clinical research suggesting a glucose kinase activator could help diabetes patients with Covid-19 by limiting the overactive response of the immune system that is typically acute in patients with raised blood glucose levels.
The trial began in late September and involves patients with mild to moderate Covid-19 symptoms.
If found to be successful, the drug could eventually be prescribed to diabetic patients displaying early symptoms of coronavirus.
