If you’ve lost count (or never started), we are now at week 39 of the pandemic, which officially began on March 11, 2020, when the World Health Organization declared COVID-19 a global event. It’s been nearly 11 months since the WHO announced there was a mysterious virus emerging in Wuhan, China, and though we understand far more about SARS-CoV-2 now, there’s still a lot left for us to parse.