Disinformation about Covid-19 vaccines is still spreading on social media sites despite promises from firms to clamp down on the scourge.
The Mirror found dozens of accounts, groups and posts spouting bad science and conspiracy theories about the jab on UK platforms.
PM Boris Johnson said last month he had received a commitment from Facebook, Twitter and Google they would remove content quickly.
But within two minutes of searching for Covid-19 vaccine-related groups on Facebook, 25 were against the jab, with many of them private and inaccessible.
A string of accounts on various platforms flagged by the The Center for Countering Digital Hate to the tech giants are still active.
It estimates Facebook and Instagram earn up to £745million from anti-vaxxers, largely via adverts.
It calculated YouTube earns up to £600,000 and Twitter up to £4.2m, also through advertising.
One of the “main players” accused of spreading disinformation is Robert F Kennedy Jr, the nephew of ex US president John F Kennedy, who has 722,000 Instagram followers.
The CCDH said he had leveraged his celebrity to become a top advocate of conspiracy theories about Bill Gates and 5G mobile phone signals.
Our Facebook search brought up a string of groups such as “ Coronavirus vaccine is a microchip. Refuse it!”
Another, “Covid-19 Vaccine Refusers”, posts messages about Microsoft owner Bill Gates, who invested in a jab to help control the disease.
All the accessible groups have a warning stating the NHS website should be visited to help answer questions about vaccines.
CCDH chief executive Imran Ahmed said the promises to Mr Johnson were worth “nothing” unless more was done to remove accounts spreading the material.
He said: “Our estimations suggest the audience for misinformation and conspiracy theories about the vaccine is worth hundreds of millions to social media platforms.”
Shadow Secretary of State for Digital, Jo Stevens, said: “The Government’s deal with the social media companies is a pitiful response to the tsunami of disinformation.”
Minister for Digital and Culture Caroline Dinenage said they expect Facebook, Twitter and Google “to keep their promises”.
