One theory claims that the coronavirus originated in Wuhan because the city had been rolling out 5G.
It suggests it has been spread to other cities that are also using 5G.
Other theories suggest that the radiation emitted by 5G masts lowers the immune system of people nearby.
One version of this theory suggests the radiation sucks the oxygen out of the atmosphere and disrupts the regular functioning of the human body.
Scientists have described the claims as baseless and a biological ‘impossibility’.
Dr Michael Head, senior research fellow in global health at the University of Southampton, said: ‘Conspiracy theorists are a public health danger who once read a Facebook page.
‘Here, we also see similar groups of people keen to show their ignorance on a topic where they have no helpful expertise, nor any inclination to post useful public health messages.’
The world health organisation has branded the spread of disinformation about COVID-19 on social media platforms as an ‘infodemic’.
On 5G generally the World Health Organisation said: ”A large number of studies have been performed over the last two decades to assess whether mobile phones pose a potential health risk.
‘To date, no adverse health effects have been established as being caused by mobile phone use.’
Infrastructure expert Dr Paul Carter, CEO of Global Wireless Solutions says there is a marked difference between fourth and fifth generation mobile.
‘Currently higher radio frequencies are being used by next-generation networks,’ he said.
‘There is generally greater bandwidth available in the higher frequency bands which lead to higher network speeds (which are required for many 5G applications) – but these signals won’t travel as far as lower frequency signals.
‘Therefore, to achieve the promise of ultrafast, super-reliable connectivity, there will be a need for a larger and more densely distributed arrangement of cell sites built in closer proximity to one another.
‘However, current UK deployed frequency bands for 4G range from 800 MHz up to 2,600 MHz – current 5G frequency bands are in the 3,400 MHz range, so although higher, they are not dramatically higher.
‘As part of GWS’ ongoing testing and research, we’ve discovered that consumers have come to consider the performance of 4G as the new minimum technology standard – anything less causes frustration.
‘It’s highly likely that the increased performance offered by 5G will very quickly follow suit as the new normal in the future.’