MedscapeUnivadisEnglish EditionMedscapeUnivadisXPlease confirm that you would like to log out of Medscape.If you log out, you will be required to enter your username and password the next time you visit.>>Experts predicted that the 2019/20 flu season in the Northern Hemisphere would be a bad one. And then it wasn't.The COVID-19 pandemic hit, international travel ground to a halt, physical distancing and mask wearing became more common, and the flu went away.Rachel Baker, PhD, who studies public health and infectious disease at Princeton University's High Meadows Environmental...…MedscapeUnivadisEnglish EditionMedscapeUnivadisXPlease confirm that you would like to log out of Medscape.If you log out, you will be required to enter your username and password the next time you visit.>>Experts predicted that the 2019/20 flu season in the Northern Hemisphere would be a bad one. And then it wasn't.The COVID-19 pandemic hit, international travel ground to a halt, physical distancing and mask wearing became more common, and the flu went away.Rachel Baker, PhD, who studies public health and infectious disease at Princeton University's High Meadows Environmental...WW…