Dr Petousis-Harris said misinformation about the vaccine was inflated by the use of social media.

Varun Kapoor said misinformation about the deadly coronavirus is spreading as fast as the disease.

But the company said misinformation had been circulating about the application and the concerns were unfounded.

Speaking to parliament, Prime Minister Oleksiy Honcharuk said misinformation about the coronavirus was being spread from within and outside Ukraine.

The Referendum Commission, which is distributing 1.3 million information booklets this week on the abortion referendum, has said misinformation surrounds the debate "on both sides".