Johnson has previously warned that the swift spread of the B.1.617.2 variant of concern first identified in India could derail his plans to end England's COVID restrictions on June 21.
"I can see nothing in the data at the moment that means we can't go ahead with step four, or the opening up on June 21st, but we've got to be so cautious."
"One lesson that we learned from the financial crisis is that withdrawing policy support too early can be very costly," Tenreyro said in an online discussion hosted by Swedish think tank SNS.
"Withdrawing it too early ... can lead to scarring effects on the labour market that would be very costly and slow down growth going forward," she added.
India breached the grim milestone of 100,000 daily infections for the first time on Monday, and cases are likely to stay high again when fresh figures are released later on Tuesday.
If a larger number of young and working population is vaccinated, the intensity of the cases would be much lower than the treatment that they need today.
Ukraine received its first batch of 215,000 Sinovac doses in March to boost its vaccination programme, which has lagged behind many other European countries and it has so far relied on a single batch of AstraZeneca vaccines from India.
"The vaccines of the Chinese company Sinovac Biotech can be trusted," it said.
Health authorities previously expected the vaccination programme to be completed by June 27, but delays in shipments of the two companies' shots have pushed that date back, B.T. and broadcaster TV 2 reported on Friday.
After weeks as the country with the greatest number of infections in relation to its population, Portugal recorded the strongest decline last week with a 51-percent drop in new cases to 2,100 per day.
The first wave of COVID-19 vaccinations, prioritising frontline medical workers and high-risk groups, will begin in March right after the first batch of the AstraZeneca vaccine arrives and passes quality checks.
The government said previously it was in talks with Russian and US vaccine manufacturers on potential supply agreements.
The country's vaccination programme is starting months after other nations', following its provisional approval of the Pfizer product for use in January.
"According to what we know now, all three vaccines are effective in preventing the severe course of the COVID-19 illness," Spahn told a news conference.
Turkey has reported more than 2.3 million infections since March and still reports around 10,000 new cases and 170 deaths each day after a month of weekend lockdowns and nightly curfews.
We spent around 10 months in white overalls, supporting people as they struggle for life. Health workers know very well that this situation cannot be taken lightly and that the vaccine is needed.
Castex and Health Minister Olivier Veran visited a health centre in Tarbes, southwestern France, on Saturday as part of the government's campaign to accelerate France's vaccine rollout.
US-based Moderna said on Monday it would produce at least 600 million doses of its COVID-19 vaccine in 2021, up by 100 million doses from its previous forecast.