In the “Jaws” movie franchise, there is one movie after another where a great white shark attacks people at the beach who venture too far from shore.  Clearly, it was not safe to get back in the water, but the people did anyway. Frolicking at the beach is a great summer recreation, but if Jaws is still out there somewhere, it is not a great idea.

We have a similar situation with Covid-19. After an initial peak, social distancing, mask wearing, and then vaccination sent infections and deaths down in countries that practiced those intervention. However, like Jaws, Covid-19 keeps coming back, more dangerous than ever. Why is this? Continue reading →