Write a research essay about the epidemiology of Covid-19. Use the 4 factors of a well-understood disease as a guideline. Include a short description of the studies that have been done, how reliable they are, and any biases and/or confounding variables that should be considered. Also, include a brief discussion of causation, association, and the ethics that have been brought up (vaccination, mandates, travel restrictions, etc.)
A well-understood disease has 4 basic
elements…
1. Homogeneous set of signs and symptoms
2. Knowledge of the etiology
3. Appreciation of the natural history
4. Treatment derived from 2 and 3
