The discount retailer, which has a store at the Beehive Centre in Cambridge, has not disclosed which stores are to shut.
A 120-bed temporary facility could be built near to the hospital, Liberal Democrat councillors say.
PM suffering from symptoms for past 10 days
Her Majesty also thanked those staying at home for helping to reduce the spread of Covid-19.
Cambridge Street Aid hits £100,000
Sir Keir defeated Rebecca Long-Bailey and Lisa Nandy in the contest.
Roland Sinker, chief executive of Cambridge University Hospitals, confirms there are now 100 ventilators on site.
Drugs usually used to treat HIV, inflammation and malaria being tested - and more patient volunteers are needed.
Cambridge landmark is illuminated
First delivery of 2,000 protective face shields for frontline NHS staff at Addenbrooke's and Papworth hospitals.
