he cites a large French study that was double blind. It doesn't mean the people complaining of symptons are faking it. The placebo (or nocebo) effect of sugge

he cites a large French study that was double blind. It doesn't mean the people complaining of symptons are faking it. The placebo (or nocebo) effect of suggestion can be very real. That being said, even the flu has always had a percentage of lingering cases.