The World Health Organisation on Tuesday said it was concerned about the easing of Covid-19 restrictions by nations hosting Euro 2020 matches.
Robb Butler, an executive director at the WHO's European regional office, said some of those countries were already experiencing rising numbers of cases.
"A few of the stadiums hosting the tournament are now increasing the number of spectators allowed," Mr Butler said.
The UN health agency did not single out any cities, but Britain said on Tuesday that more than 60,000 spectators would be allowed at Wembley stadium in London for the semi-finals and final of the tournament.
Originally, it was going to limit the crowd to 40,000.
European football association Uefa has been in talks with the UK government to ease travel restrictions, allowing as many as 2,500 VIPs to attend the final on July 11.
In some "host cities, Covid-19 cases are already on the rise in the area where matches will be held", Mr Butler said.
In areas where infection rates are increasing, WHO Europe called on the cities concerned to act quickly.
"Learning from experience, we must act fast on signals showing increasing cases," Mr Butler said.
"Expanding testing and sequencing; stepping up contact tracing; and building very high vaccine uptake fast among those vulnerable and most at risk."
In Denmark, 29 cases have been detected in connection with the Euro games being played in Copenhagen.
The infections involved people who were already ill during the match or were infected during the game, Anette Lykke Petri, a health authority official, said on Tuesday.
"In theory, there could be more people infected," Ms Petri said.
In Denmark, the permitted audience has also recently been increased to 25,000, from 16,000.
The higher number was first applied for last Thursday's game between Denmark and Belgium.
In Budapest, games at the Puskas Arena, which has a capacity of 68,000, have been played to a full stadium.
Uefa stripped Dublin and Bilbao of hosting roles for the tournament because the capacities allowed were too low.
Among the host cities, Russia's St Petersburg in particular has reported an increase in infections in recent days.
Case numbers are decreasing in Spain's Seville and in Rome, Italian authorities assure that no cases of Covid-19 linked to the competition have been detected.
While the situation across Europe has improved over the past two months, the WHO has urged continued caution.
"Although we have come far, we have not come far enough," Hans Kluge, the WHO's regional director for Europe, warned in early June.
Vaccinations were still too low to protect the region from a resurgence, Mr Kluge said.
About Proto21
Date started: May 2018
Founder: Pir Arkam
Based: Dubai
Sector: Additive manufacturing (aka, 3D printing)
Staff: 18
Funding: Invested, supported and partnered by Joseph Group
HIJRA
Starring: Lamar Faden, Khairiah Nathmy, Nawaf Al-Dhufairy
Director: Shahad Ameen
Rating: 3/5
Lexus LX700h specs
Engine: 3.4-litre twin-turbo V6 plus supplementary electric motor
Power: 464hp at 5,200rpm
Torque: 790Nm from 2,000-3,600rpm
Transmission: 10-speed auto
Fuel consumption: 11.7L/100km
On sale: Now
Price: From Dh590,000
Venue: Sharjah Cricket Stadium
Date: Sunday, November 25
Listen to Extra Time
TEACHERS' PAY - WHAT YOU NEED TO KNOW
Pay varies significantly depending on the school, its rating and the curriculum. Here's a rough guide as of January 2021:
- top end schools tend to pay Dh16,000-17,000 a month - plus a monthly housing allowance of up to Dh6,000. These tend to be British curriculum schools rated 'outstanding' or 'very good', followed by American schools
- average salary across curriculums and skill levels is about Dh10,000, recruiters say
- it is becoming more common for schools to provide accommodation, sometimes in an apartment block with other teachers, rather than hand teachers a cash housing allowance
- some strong performing schools have cut back on salaries since the pandemic began, sometimes offering Dh16,000 including the housing allowance, which reflects the slump in rental costs, and sheer demand for jobs
- maths and science teachers are most in demand and some schools will pay up to Dh3,000 more than other teachers in recognition of their technical skills
- at the other end of the market, teachers in some Indian schools, where fees are lower and competition among applicants is intense, can be paid as low as Dh3,000 per month
- in Indian schools, it has also become common for teachers to share residential accommodation, living in a block with colleagues
The%20Emperor%20and%20the%20Elephant
%3Cp%3E%3Cstrong%3EAuthor%3A%20%3C%2Fstrong%3ESam%20Ottewill-Soulsby%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EPublisher%3A%20%3C%2Fstrong%3EPrinceton%20University%20Press%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EPages%3A%20%3C%2Fstrong%3E392%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EAvailable%3A%20%3C%2Fstrong%3EJuly%2011%3C%2Fp%3E%0A
Brief scores:
Toss: Sindhis, elected to field first
Pakhtoons 137-6 (10 ov)
Fletcher 68 not out; Cutting 2-14
Sindhis 129-8 (10 ov)
Perera 47; Sohail 2-18
About Housecall
Date started: July 2020
Founders: Omar and Humaid Alzaabi
Based: Abu Dhabi
Sector: HealthTech
# of staff: 10
Funding to date: Self-funded
About Takalam
Date started: early 2020
Founders: Khawla Hammad and Inas Abu Shashieh
Based: Abu Dhabi
Sector: HealthTech and wellness
Number of staff: 4
Funding to date: Bootstrapped
White hydrogen: Naturally occurring hydrogen
Chromite: Hard, metallic mineral containing iron oxide and chromium oxide
Ultramafic rocks: Dark-coloured rocks rich in magnesium or iron with very low silica content
Ophiolite: A section of the earth’s crust, which is oceanic in nature that has since been uplifted and exposed on land
Olivine: A commonly occurring magnesium iron silicate mineral that derives its name for its olive-green yellow-green colour
Company%C2%A0profile
%3Cp%3E%3Cstrong%3ECompany%20name%3A%20%3C%2Fstrong%3ELeap%0D%3Cbr%3E%3Cstrong%3EStarted%3A%20%3C%2Fstrong%3EMarch%202021%0D%3Cbr%3E%3Cstrong%3EFounders%3A%3C%2Fstrong%3E%20Ziad%20Toqan%20and%20Jamil%20Khammu%0D%3Cbr%3E%3Cstrong%3EBased%3A%3C%2Fstrong%3E%20Dubai%0D%3Cbr%3E%3Cstrong%3ESector%3A%20%3C%2Fstrong%3EFinTech%0D%3Cbr%3E%3Cstrong%3EInvestment%20stage%3A%20%3C%2Fstrong%3EPre-seed%0D%3Cbr%3E%3Cstrong%3EFunds%20raised%3A%3C%2Fstrong%3E%20Undisclosed%0D%3Cbr%3E%3Cstrong%3ECurrent%20number%20of%20staff%3A%20%3C%2Fstrong%3ESeven%3C%2Fp%3E%0A
Trolls World Tour
Directed by: Walt Dohrn, David Smith
Starring: Anna Kendrick, Justin Timberlake
Rating: 4 stars