HEALTH CARE BRIEFING: Mutations Muddle Hope as New Vaccines Near
February 1, 2021 6:15 AM By Brandon Lee and Alex Ruoff The world could be on the verge of having two more vaccines to fight the pandemic, but virus variants popping up worldwide are forcing vaccine-makers to develop boosters for a disease thatâs constantly changing and could remain active for years. The vaccines developed by Moderna and Pfizer-BioNTech are already in use. Meanwhile, new studies show that two othersâfrom Johnson & Johnson and Novavaxâpack potent punches against the virus, potentially paving a way for quick authorizations in the U.S. for J&Jâs va...