Coronavirus: Why don’t people get sick despite being infected?

Even as others were dying of COVID-19, Rick Wright made phone calls to his business clients. He lifted weights, did pushups and glided on an elliptical trainer. Late at night, he took his dog on long walks.
“I never felt sick. Not a cough, wheezing, headache. Absolutely nothing,“ said 63-year-old Wright of Redwood City, despite testing positive for the virus – 40 days, straight — after being exposed aboard the Diamond Princess cruise last February.
Seven months into a pan