"Learning about a new disease on the fly, with more than 78,000 U.S. deaths attributed to the pandemic, they have little solid research to guide them. The World Health Organization’s database already lists more than 14,600 papers on covid-19. Even the world’s premier public health agencies, including the Centers for Disease Control and Prevention, have constantly altered their advice to keep pace with new developments.

"We don’t know why there are so many disease presentations,” said Angela Rasmussen, a virologist at the Center for Infection and Immunity at Columbia University’s Mailman School of Public Health. “Bottom line, this is just so new that there’s a lot we don’t know.”

"It attacks the heart, weakening its muscles and disrupting its critical rhythm. It savages kidneys so badly some hospitals have run short of dialysis equipment. It crawls along the nervous system, destroying taste and smell and occasionally reaching the brain. It creates blood clots that can kill with sudden efficiency and inflames blood vessels throughout the body.

"It can begin with a few symptoms or none at all, then days later, squeeze the air out of the lungs without warning.

“No one was expecting a disease that would not fit the pattern of pneumonia and respiratory illness,” said David Reich, a cardiac anesthesiologist and president of Mount Sinai Hospital in New York City.

"It mostly spares the young. Until it doesn’t: Last week, doctors warned of a rare inflammatory reaction with cardiac complications among children that may be connected to the virus.

"On Friday, New York Gov. Andrew M. Cuomo announced 73 children had fallen severely ill in the state and a 5-year-old boy in New York City had become the first child to die of the syndrome. Two more children had died as of Saturday."

[msn.com]