Long-time friend Penny Arcade also shared further details, claiming her former husband said Marianne can “barely speak”.
She detailed how she had been in touch with John Dunbar, who gave her a heartbreaking update.
The hitmaker, who has been married three times, and the British artist, 77, were wed back in the mid 1960s
Penny wrote on Facebook: “Marianne Faithfull is in hospital in London having tested positive for Covid 19. She went in this past Tuesday.