But while vaccine companies are under no legal obligation to demonstrate duration of immunity, that question may remain unanswered for some time. (abcnews.go.com)
What: After reporting its fourth - quarter and full - year financial results, shares of the clinical - stage vaccine company Novavax (NASDAQ: NVAX) dropped by as much as 10 % in afternoon trading today. (fool.com)
She then held a range of short - term positions at institutions like Epicentre, the Organization of American States, human vaccine company Sanofi Pasteur, and WHO. (sciencemag.org)