Professor Matteo Bassetti said he is convinced the virus is ‘changing in severity’ and patients are now surviving infections that would have killed them before.
And if the virus’s weakening is true, Covid-19 could even disappear without a for a vaccine by becoming so weak it dies out on its own, he claimed.
Professor Bassetti suggests this could be because of a genetic mutation in the virus making it less lethal, because of improved treatments, or because people are not getting infected with such large doses because of social distancing.
But other scientists have hit back at the claims in the past and said there is no scientific evidence that the virus has changed at all.
At the start of June, in response to Professor Bassetti’s claim, Dr Angela Rasmussen, from Columbia University, tweeted: ‘There is no evidence that the virus is losing potency anywhere.’