Stress is both a poison and a stealthy robber of our bodies and our souls. It works in nefarious ways to undermine every bit of us, both physical and mental, without noticing it’s there.

Convalescent plasma is the liquid portion of the blood of individuals who have recovered from COVID-19. In the plasma are hundreds of proteins, including the antibodies that are developed by the body after it has fought off the infection.

A heavily criticized recommendation from the Centers for Disease Control and Prevention last month about who should be tested for the coronavirus was not written by C.D.C. scientists and was posted to the agency’s website despite their serious objections,

Although many debate the effectiveness of paper masks, I am more interested in the evidence supporting wearing one rather than the politics surrounding masking.