Nature does both: scientific news and scientific literature.
> Which conferences, what % of the total? more specifics?
This is probably the paywall getting you, because many specific conferences are listed.
> At the moment, there are no data available on how widespread the issue is
(Not surprising, remember it’s only May!)
Also, at the end of the article they mention some other conferences that seem unconcerned
Nature does both: scientific news and scientific literature.
> Which conferences, what % of the total? more specifics?
This is probably the paywall getting you, because many specific conferences are listed.