I came across this article in the Daily Mail earlier on today while searching for something else :-
www.dailymail.co.uk
I couldn't find a main cross reference though individual bits seemed to be correct

Why many struck by Long Covid may be suffering from glandular fever
A year after the start of the coronavirus pandemic, experts have made an intriguing discovery: blood tests on some sufferers of long Covid are coming back positive for 'reactivated' Epstein-Barr.
I couldn't find a main cross reference though individual bits seemed to be correct
Positive Epstein-Barr Virus Detection in Corona Virus Disease 2019 (COVID-19) Patients
Background: The pathological report suggested severe immune injury in corona virus disease 2019 (COVID-19) patients. Epstein-Barr virus (EBV) reactivation has b
papers.ssrn.com