As COVID-19 lawsuits proliferate, businesses and their counsel should prepare for a battle of the experts on causation when there is no direct evidence that a plaintiff’s injury can be attributed to a certain source. As product liability lawyers know, plaintiffs typically must prove both general causation and specific causation in tort cases alleging exposure to a pathogen. General causation requires expert testimony to show that the exposure to something – here the novel coronavirus – can cause the type of injury – COVID-19 – that affected the plaintiff. Specific causation, however, requires something more. To prove specific causation, plaintiffs must be able to attribute their exposure or injury to a particular defendant.
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