Russia now has the second-highest number of confirmed coronavirus infections worldwide after the United States, with Putin's spokesman testing positive.
Kremlin spokesman Dmitry Peskov tests positive for coronavirus and is being treated in hospital, Russian media say.
Meanwhile, five Covid-19 hospital patients killed in a St Petersburg fire linked to a ventilator short-circuit.
In other developments today:
* South Korea says there are now 101 new cases of coronavirus linked to a nightclub district in Seoul.
* Wuhan is drawing up plans to test all 11 million residents, Chinese state media report, amid new cluster fears
* The number of deaths linked to coronavirus in care homes in England and Wales fell in the last week of April