Effectiveness of a Covid mRNA Vaccine Against Two Early Variants: A Reanalysis of Published Data

Eyal Shahar, DOI: 10.7759/cureus.9066 Abstract Introduction: Two strong biases, immortal time and healthy vaccinee, have not received the attention they deserve in observational studies of Covid vaccines. The former arises from…[...]

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Exploration of Intersections and Divergences of Long COVID and Chronic Fatigue Syndrome

Joao A. Kouyoumdjian • Leticia A. Yamamoto • Carla R. Graca, DOI: 10.7759/cureus.90607  Abstract Background: Fatigue is the most common symptom of Long COVID (LC), defined by persistent or newly emerging symptoms that develop at least three…[...]

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