Britain's top virus experts have urged Chinese authorities to reveal crucial information about a worrying outbreak of the HMPV respiratory infection, which is said to be overwhelming its hospitals.
British authorities are " seeking more information on the particular strain that is circulating " to accurately assess the threat to the British public, warned virus expert Dr. Andrew Catchpole.
It comes as cases of the infection, which has cold-like symptoms, are rising across Britain, with graphs showing a doubling of numbers over the last month.
Currently, one in 20 cases of respiratory infections may be caused by the infection, known as human metapneumovirus (hMPV), according to the latest surveillance data in the UK.
“hMPV is typically detected in winter periods, but it appears that the rate of serious infections may be higher in China than we would expect in a typical year,” said Dr. Catchpole, who is Chief Scientific Officer at infectious disease testing firm hVIVO.
"We need more information on the specific strain that is circulating to understand whether these are the usual strains circulating or whether the virus that is causing high rates of infections in China has some variation."
He added: "It's not clear what the numbers are or whether the problems are simply happening because of the coincidence of high levels of flu and Covid."
Hopefully, Dr. Catchpole noted that, while hMPV “can change and mutate over time, creating new strains,” it is not “a virus that is considered to have pandemic potential.”
Speaking to MailOnline, multiple experts urged Britons not to panic, as the vast majority of infections cause "mild, cold-like symptoms".
However, for those with weakened immune systems, very young children, the elderly, and those with certain other health conditions, the infection can lead to more serious illness.
"In young children, the elderly and those with weakened immune systems, hMPV can lead to severe cases and can travel to the lower respiratory tract and cause pneumonia," warned Jaya Dantas, professor of international health at Curtin University in Australia.
"We need to use a cautious and measured approach, as we now know much more after the Covid pandemic."
Beijing has downplayed images of overcrowded rooms and wards that have been posted on social media, saying respiratory infections are "less severe" and "smaller in scale" compared to last year.
This has led some people to fear that there are similarities between the current situation and the 2019 Covid outbreak, which was initially downplayed by China.
However, British experts have noted that the scenes in Chinese hospitals appear to be little different from those in the UK health service at this time of year.