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The article at the link below shows models and discusses various strategies to prevent coronavirus from spreading. To summarize: the most interesting basic point is that quarantining doesn’t really work, since it seldom can be maintained—instead those efforts are better directed at social distancing over a broader range. In other words, given a LARGE-sized population, it is less effective to try to isolate the sick SUBSET of the population (because some inevitably will escape/violate it), than it is to implement social distancing across the ENTIRE population.

https://www.washingtonpost.com/graphics/2020/world/corona-simulator/

Here is another valuable document that is a crowd sourced list of resources from the American Society of Microbiologists. It includes links for teaching tools and a free online textbook.

https://docs.google.com/spreadsheets/d/17m1gUVprX8CqYP5P0ijnkLBtD-zkPdgvkKnjQyiSE8k/edit#gid=0

FedEx and UPS delivery truck drivers are showing up for work sick.  The conditions described in the facilities could make them a breeding ground for the transmission of the virus.  Since the virus can live for possibly 24 hours on cardboard, be very careful how you handle the outer boxes of your packages.  And, of course, you have no idea how healthy the people are who packed the cartons in the first place (or for that matter, the people at Giant who gather your groceries for delivery or stock the shelves). Maybe online shopping is not such a great idea these days. https://www.nytimes.com/2020/03/21/business/coronavirus-ups-fedex-xpo-workers.html?nl=todaysheadlines&emc=edit_th_200322&campaign_id=2&instance_id=16974&segment_id=22534&user_id=8816b688b5ddf87b2697ab93c7a90823&regi_id=174655980322