The question that should be asked is what medications were these covid patients taking and are still taking?
There are a number of medications, including antivirals prescribed for covid patients, that cause side effects which include fatigue and shortness of breath which matches the symptoms of so-called ‘Long Covid’.
Also, commonly used drugs like ACE inhibitors and angiotensin 2 receptor blockers (ARBs) have common side effects which include fatigue, blurred vision, dizziness, loss of taste, gastrointestinal issues (such as constipation, diarrhea, or nausea), headache etc.
“Ask the right questions if you're going to find the right answers.”- Vanessa Redgrave