Covid Variants Keep Getting More Infectious. Here’s Why.
Covid Variants Keep Getting More Infectious. Here’s Why.
With each mutation, the Covid-19 virus is becoming more transmissible. WSJ’s Daniela Hernandez breaks down the science of how Covid variants are getting better at infecting and spreading. Illustration: Rami Abukalam
3:16
Daniela Hernandez
Daniela Hernandez extends her health and science reporting to cover a variety of relevant subjects from Covid-19 to climate change.