Medical Notes: Week of December 26, 2021

Some theories claim that Covid-19 was created in a laboratory in Wuhan, China, but a study now has turned up more evidence confirming the wet market theory. Plus, what restaurants and supermarkets you have in your neighbor can predict your health. And finally, if transmission of Covid is more likely inside than outside, does that mean the wind is protecting you outdoors? The answer, apparently, is yes.