Tag Archives: Moderna

Melissa Hawkins is an epidemiologist and public health researcher at American University. She explains the way researchers calculate how well a vaccine prevents disease, what influences these numbers and how omicron is changing things.

The Oxford vaccine, based on a viral vector, is also cheaper (around US$4) than Pfizer and Moderna’s mRNA vaccines – around US$20 and $33, respectively. AstraZeneca has made a “no profit pledge”.