Read the Medical Medium page on EBV. EBV itself can lead to postviral illness and long recovery timelines. There’s also evidence that, for some people, Long Covid includes re-activation of EBV. Foods that help with one virus may also help with another. The Medical Medium is a controversial figure. He falls under my principle of “If it helps, it helps.” Sick people need relief. I don’t care where that relief comes from. It’s true he makes strong claims he doesn’t back up with data. But some of his claims do align with other research. I know people who’ve benefited from following his advice, including a good friend. Take it with a grain of salt, as you should everything you read online. Check that none of it is contra-indicated for you. If it’s not, you have little to lose (except time and money, and maybe your taste for celery).
See which foods you might like to add more of
Incorporate all 12 into your daily food for a few months