Paul Vieira covers Canada for The Wall Street Journal, and is based in Ottawa.

The US Food and Drug Administration has discussed with vaccine-maker Novavax the need for an additional trial of its Covid-19 ...

On Tuesday, the U.S. Department of Health and Human Services announced that the government will invest $176 million in ...

The mRNA technology behind the Pfizer and Moderna vaccines are groundbreaking, but their potential goes way beyond COVID-19.

Novavax is working closely with federal drug regulators to get full approval for its COVID shot. The vaccine is the only ...