US seeing ‘fourth wave’ of coronavirus infections due to variants: Osterholm

Epidemiologist Dr. Michael Osterholm believes the U.S. is seeing a “fourth wave” of infections due to coronavirus variants that have arisen over the past few months. Osterholm, who served as a…

AstraZeneca, Pfizer COVID-19 vaccines effective against variants, Oxford University study shows

A coronavirus variant first detected in Brazil poses less of a threat to vaccines developed by AstraZeneca and Pfizer than researchers first worried, according to new findings announced Thursday by Oxford University. “The results…

Novavax COVID-19 vaccine shows 96.4% efficacy, less protection against variants

The Maryland-based biotech Novavax has announced its COVID-19 vaccine candidate has 96.4% efficacy against COVID-19 illness from the original strain, sliding to 86.3% against the U.K. variant and falling to 48.6% in…

California detects New York, Brazil coronavirus variants

California has discovered its first cases of coronavirus variants initially detected in New York and Brazil, per multiple reports. Gov. Gavin Newsom said the New York variant, called B.1.526, was discovered in…

Modified COVID-19 vaccines targeting variants can skip lengthy trials, UK says

Britain’s regulator on Thursday said modified coronavirus vaccines meant to target highly transmissible variants can sidestep new approvals and extended clinical trials. Drug makers must instead show “robust evidence” the tweaked shot results in an…

CDC warns that all recent COVID-19 gains can be lost due to new variants

Dr. Rochelle Walensky, the head of the U.S. Centers for Disease Control and Prevention, said Monday that she is concerned about the virus’ variants and said the recent ground the…

Biden warns COVID-19 cases ‘could go back up’ as variants emerge, despite vaccination progress

President Biden warned Friday that the rise of COVID-19 variants could lead to a surge in cases in the coming weeks, even as his administration makes progress on its goal…

How would COVID-19 vaccine makers adapt to variants?

How would COVID-19 vaccine makers adapt to variants? By tweaking their vaccines, a process that should be easier than coming up with the original shots. Viruses constantly mutate as they…

How are experts tracking variants of the coronavirus?

How are experts tracking variants of the coronavirus?  Scientists are scanning virus samples taken from infected people to look for mutations, through a process called genome sequencing. It’s the same…

FDA addresses coronavirus variants in updated guidance for medical developers

The Food and Drug Administration issued new guidance on Monday amid the emergence of new coronavirus variants for medical product developers. The regulatory agency said it is “committed to identifying…