NO cases of influenza have been detected in England this year because of social distancing measures
Daily Mail
Public Health England had sequenced more than 20,000 random test samples for flu by February 14 but hasn't yet detected a case of the virus in 2021.
https://www.dailymail.co.uk/news/article-9295743/NO-cases-influenza-detected-England-year-social-distancing-measures.html?ns_mchannel=rss&ns_campaign=1490&ito=1490