The World Health Organisation's warning people to be very careful about organising mass gatherings.
The total number of cases of Covid-19 around the world has risen to 6.4 million and there have been 380,000 deaths.
The spread of the virus is slowing in most countries.
But Dr Maria Van Kerkhove, from the WHO, says mass gatherings should still be treated with caution.
"With increased social mixing and people coming together, particularly in areas if the virus is not under control, that close contact between people can pose a risk.
"We need to ensure that in locations that are considering these mass gathering events that you have a system in place to prevent and detect and respond to any such cases."
