There are so many different issues that give the exact same symptoms of Covid so this will be happening worldwide for years and most doctors are not smart enough to know how this happens because all they know is symptom > treatment ideology.
Alcohol use is skyrocketing all over the place and the symptoms of alcohol withdrawal are the same as the flu and Covid.
Vitamin B1 Thiamin deficiency symptoms are shortness of breath, body aches, fever / chills same as Covid.
There are doubtless countless more including the normal flu and any other natural detoxification methods of the body.
Since the PCR test is primed for false positives this cycle will continue indefinitely until people either wise up to the tests or more brave doctors and nutritionists and specialists can explain to communities that these symptoms can mean literally anything.