Researchers predict 4th Covid-19 wave may hit India around June
The fourth wave's trajectory is likely to be at its peak between August 15 and 31 and thereafter start falling.
The fourth wave's trajectory is likely to be at its peak between August 15 and 31 and thereafter start falling.
Medical experts also suggested streamlining the city's resources and allowing mainland doctors and nurses to come in to help.
The move comes more than two months since vaccine passes were introduced extensively in early December.
The move was prompted by a surge in the rising number of new infections in the community, including in schools.
A spokesperson reiterated her call for the public to avoid gathering in large crowds.
Supplies from the mainland have been arriving in batches, including some 10 million N95 and KN95 masks as well as rapid antigen test kits.
However, 96 per cent of the patients reported are mild cases that express no symptoms, and 95 per cent are being treated at home.
The finance minister said similar offers also came from the Asian Development Bank and the World Bank.
The certificates are issued to people who have received one of eight types of Covid-19 vaccines licensed for use in Vietnam.
Authorities urged controls after cluster infections were introduced into Beijing by people returning from a course in another city.