Coronavirus could be causing lung damage that is visible three months after the infection, a new study has found. The research could be a possible link to long Covid, something that experts still do not fully understand.A study of 10 patients by boffins at the University of Oxford used a new scanning method to detect lung abnormalities.The experiment, which was led by Professor Fergus Gleeson, involved patients between 19 and 69.A larger study is now being organise to ephor whether Covid-19 causes permanent lung damage.Of the small sample, eight participants reported shortness of breath and fatigue more than three months after first falling ill.The scan found lung abnormalities in all participants that traditional scanning would not have.