The FDA categorized the recall of more than 2.2 million Ellume Pty Ltd. COVID-19 Home Tests that began Oct. 5 as a class I recall, “the most serious type of recall.” While the agency has received significant criticism lately about ambiguity in recalls that often leaves consumers uncertain about their seriousness, the FDA eliminated all doubt on this one saying, “use of these tests may cause serious adverse health consequences or death.” The FDA said it received 35 reports of false positives associated with the antigen test. No deaths have been reported.

European regulators have put off a decision on Biogen Inc and Eisai, Co. Ltd.’s controversial Alzheimer’s drug, aducanumab, for likely another month, after the companies announced further supportive data from a follow-up under review by the FDA.

Vaxxinity Inc. priced its IPO below the targeted range, selling 6 million shares (NASDAQ:VAXX) at $13 each for proceeds of $78 million, but came out of the gate impressively, closing at $16.55, up $3.55, or 27%, after reaching $22.77 during the day.

The U.S. NIH said it will go to court if necessary to defend its role in developing Moderna Inc.’s COVID-19 vaccine. NIH spokeswoman Renate Myles told BioWorld that the agency “is not giving up on our claim that NIH is a co-inventor on the mRNA technology used in the Moderna’s COVID-19 vaccine but defers to legal authorities on how this might be resolved.”

The University of Oxford has begun recruiting for a phase I Ebola vaccine trial, with the first vaccinations based around the same technology as the university’s COVID-19 vaccine.