Pubs and bars not serving "substantial meals" must close, alongside casinos and betting shops, while people have also been told to avoid unnecessary travel.
With over one million coronavirus deaths and nearly 40 million cases worldwide, regions like Europe that suppressed the first outbreak are again facing tough choices on how to control a new wave.
After falling during the summer, coronavirus cases are rising in the UK as winter approaches, with northwest and northeast England seeing the steepest increases.
Reports suggest the talks could now continue for the rest of October, but British officials are stressing the need for clarity on whether a deal is feasible by the summit.
According to official figures, there were 12,872 new cases on Saturday, while a further 49 people have died within 28 days of testing positive for COVID-19.
In a message to Trump, Xi said that after learning President Trump and Melania have tested positive for COVID-19, he and his wife Peng Liyuan extend sympathy to them and wish them a speedy recovery
