WhatsApp claims to have seen a 70% drop in "highly forwarded" messages, the type that could spread coronavirus misinformation.
The World Health Organization has stated that the spread of false news about the epidemic is "demic information".
And two weeks ago, WhatsApp stopped messages sent between individual users five or more times before being published on more than one group of chats at a time.
But experts say he still has a lot to do in the battle against disinformation.
"WhatsApp is committed to doing our part in the fight against viral messages," said a messaging platform spokesman.
"This change is helping to keep WhatsApp a place for personal and private conversations."
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Past the peak of WhatsApp viral disinformation?
By Marianna Spring, reporter specialized in disinformationWhatsApp has been instrumental in spreading misinformation during the pandemic.
Concerned friends and relatives have used private group chats to forward deceptive lists of medical advice or speculation about government plans, "just in case" could be helpful.
The WhatsApp and private messaging channels are much more difficult to monitor than Facebook, Twitter or YouTube: we rely on other message-related signalers.
But it looks like we may have passed the first peak of WhatsApp viral disinformation.
When the messages tell you that there will be tanks on the streets and they don't show up, you start to doubt it.
But that's not to say that we won't see another wave of misleading information as speculation about the loosening of the blockade begins - and what will happen next.
The director general of the Center for the fight against digital hatred Imran Ahmed told BBC News: "More needs to be done from social media giants like WhatsApp.
"There is still a great deal of disinformation on the platform.
"The 70% figure seems to mask a lot of complexity on a topic where nuance is of paramount importance.
"What metric are they using for that?
"At a time when people cannot meet face to face, the disinformation crisis is entirely driven by the spread of social media."
