Angela Merkel's initial test for coronavirus has returned a negative result, but the German leader's spokesman, Steffen Seibert, told news agency Deutsche Presse-Agentur that "further tests will be conducted in the coming days".

Chancellor Merkel went into quarantine on Sunday after being informed that a doctor who had administered a vaccination to her had contracted Covid-19.

She received the precautionary vaccination against pneumococcal infection on Friday.

The 65-year-old, who has led Germany since 2005, was informed about the doctor's test shortly after holding a news conference announcing new measures to curb the spread of the virus.

German Vice-Chancellor Olaf Scholz said earlier on Monday that Mrs Merkel was healthy but working from home, where she had lead a cabinet meeting by phone.

The number of confirmed coronavirus cases in the country has risen to 22,672 and 86 people who contracted the virus have died, a tally by public health agency Robert Koch Institute revealed on Monday.

That compares with 18,610 cases and 55 deaths on Sunday, when the RKI warned that the actual number was likely higher as not all local health authorities had submitted their figures over the weekend.