Unambiguous Science

James Scott, lead at the Occupational and Environmental Health team at the Dalla Lana School of Public Health in Toronto has an incredible lab where they test N95 masks for Health Canada. This lab, in collaboration with CBC Marketplace, has subsequently done an excellent and in-depth analysis on a few different kinds of face covering

??? ???? ???? ??? ?????????? ?? ??????? ???? ???? ?? ??? ???? ????? ??????????? . This has been a topic of discussion a fair amount lately, especially with kids going back to school and the POTUS’ testing positive for Covid-19. How long does one quarantine for? That brings me to my first point: does one

I want to quickly write a post on the recent case of re-infection coming out of the US. Specifically about the re-infection in a 25-yr old <2 months later, with worse symptoms second time around. Genetic discordance between the two infections was greater than explained by short-term in vivo evolution, ie, presumably two separate infections.

Make wise and responsible choices for Thanksgiving this

Here are a few recommendations. We all need to do our part.

Halloween doesn’t need to be completely cancelled! Here are some tips to have a safe and fun Halloween during Covid-19.       

I’ve written before how risk of exposure to SARS-CoV-2 (the virus that causes Covid-19) is a continuum and that there are no exact risk thresholds for say duration of contact or appropriate distance. For instance, wearing a mask reduces risk but doesn’t eliminate it. It is the same with distancing. 6ft may not be sufficient