Psychologial operations use confusion as an adjuvant to deliver the payload and increase it's efficacy. Nurses & docs in ER rooms are under staff cuts, protocol changes, financial pressures from hosp. administration. Among the most likely to be fooled.
it's a perspective that takes a lot of unlearning. And never for the casual conversation. As far as distinct harms, one would need to carefully look at each one, e.g. loss of taste & smell, this has been a symptom in common colds as long as I can remember.
if you take the time to study this and set aside your preconceived notions you will end up knowing what this guy knows. Which isn't to say people aren't dying of something (people die).
Start with Jon Rappoport if you want to short cut.