Russia's Euro 2021 host city Saint Petersburg on Saturday reported the country's highest daily Covid-19 toll since the start of the pandemic.
Official figures said the city, which is due to host a Euro quarter-final on Friday, recorded 107 virus deaths over the last 24 hours.
Saint Petersburg has already hosted six matches in the continental football tournament, officially known as Euro 2020, which was postponed by a year due to the pandemic.
Russia's second most populous city is where dozens of Finland supporters caught coronavirus after they travelled there for their team's defeat against Belgium.
Earlier this week city officials banned food sales in the Euro fan zone after restricting numbers and ordering the closure of food courts in shopping centres.
Saint Petersburg reported 817 new cases on the first day of June, but that number has steadily increased over several weeks to 1,247 on Saturday.
Local media published photos and video of thousands of people flooding the streets of Saint Petersburg as part of celebrations marking the end of the school year, with few anti-virus measures being respected.
Euro 2021 matches have gone ahead with spectator numbers capped at half, but are still drawing upwards of 26,000 people.
Russia as a whole has seen an explosion of new coronavirus cases since mid-June driven by the highly infectious Delta variant first identified in India.
The nation reported 21,665 new infections on Saturday – a 25 percent increase over the last week and the highest daily figure since January 21, but still below the record of 29,935 on December 24, 2020.
'One thing is needed'
The dramatic rise in infections come as officials in Moscow are pushing vaccine-sceptical Russians to get inoculated after lifting most anti-virus restrictions late last year.
"To stop the pandemic, one thing is needed: rapid, large-scale vaccinations. Nobody has invented any other solution," Moscow mayor Sergei Sobyanin told state-run television on Saturday.
"To fundamentally solve this problem, you need to be vaccinated or go to a lockdown," he was cited as saying by the RIA Novosti news agency.
Russia reported 619 new coronavirus deaths nationwide on Saturday – the highest daily toll since December – bringing the total to 132,683 fatalities since the pandemic began.
But officials in the sixth-worst hit country the world – and the hardest in Europe – have been accused of downplaying the severity of the outbreak in the country.
Under a broader definition for deaths linked to coronavirus, statistics agency Rosstat at the end of April said that Russia has seen at least 270,000 fatalities since the start of the pandemic.
Just 21.2 million out of a population of about 146 million had received at least one dose of a vaccine as of Friday, according to the Gogov website, which tallies Covid-19 figures from the regions and the media.
(FRANCE 24 with AFP)