Scientists are finding surprising results in studies they have carried out into monkeypox. Separate studies have looked at people who have been infected with the virus in the past and compared it with sufferers today.
In one, published by Nature Medicine, it warned that the virus behind the current global outbreak may have undergone "accelerated evolution". This means it is mutating much more quickly than scientists would have expected it to.
In a second, separate, study published by The Lancet it told how those found to have the virus were displaying different symptoms to previous outbreaks. It warned it could mean cases are being missed.
