A risk of rare but potentially life-threatening blood clots in combination with low platelet levels after a jab of Johnson & Johnson's Janssen COVID-19 vaccine has convinced the U.S. FDA to limit its use. The vaccine is now authorized in the U.S. only for adults who wouldn't otherwise be vaccinated and those who can't or shouldn't, for medical reasons, get another approved vaccine. Through March 18, 2022, the FDA and CDC have identified 60 confirmed cases, including nine fatal cases of the condition, called thrombosis with thrombocytopenia syndrome – a rate of 3.23 cases per million doses of vaccine administered.

A proposal hammered out by the EU, India, South Africa and the U.S. to allow IP waivers for COVID-19 vaccines is headed to all members of the World Trade Organization (WTO) for consideration.

For the first time since the early weeks of the COVID-19 pandemic in 2020, global deaths caused by the disease have fallen to their lowest point, as immunity against the SARS-CoV-2 virus and its variants continues to build. Infections and deaths appear to be decelerating, an optimistic sign that the pandemic may be nearing an end.

As many biopharmas rethink plans to go public on less-than-welcoming U.S. markets, Hillevax Inc. forged ahead, pricing an upsized IPO April 28, offering 11.8 million shares at $17 apiece, the midpoint of its previously proposed range, for gross proceeds of about $200 million. That’s the highest amount raised in a U.S. IPO so far in 2022, which saw only nine companies go public on Nasdaq during the first quarter.

Shares in Valneva SE fell sharply after the company said European regulators came back with further queries, including on antibody efficacy data, instead of a recommendation during a rolling review of its delayed COVID-19 vaccine. The company had expected a positive opinion on the vaccine, known as VLA-2001, following the April meeting of the European Medicines Agency’s CHMP committee.

By January 2022, 12 billion COVID-19 vaccine doses had been manufactured and, to date, roughly 20 vaccines have received either full approval or emergency use authorization in countries around the world. In places such as Europe and the U.S., most of the people who want vaccinations have gotten their jabs. And the vaccines continue to show efficacy, with the latest CDC data showing consistently less risk for testing positive for COVID-19 or dying from the infection for those who are vaccinated and boostered. Yet the development of new COVID-19 vaccines remains surprisingly robust, with BioWorld tracking 258, the majority of which are in preclinical development.

Astrazeneca plc led the handful of firms rolling out COVID-19-related news, as the company said detailed results from the Provent phase III pre-exposure prophylaxis (prevention) trial with Evusheld (tixagevimab and cilgavimab), were published in the New England Journal of Medicine, the “culmination of about 19 months of pretty intensive work,” said Mark Esser, vice president of microbial sciences.

The U.S. COVID-19 vaccine program is at risk of “booster fatigue,” which will undermine public confidence in the vaccines, several members of the CDC’s Advisory Committee on Immunization Practices (ACIP) said April 20 as they met to discuss the future of the vaccines. Rather than relying on boosters, “we need to use our expertise to advocate for something that’s better,” something that resolves the ill effects of COVID-19, whether it’s mild or severe, said Lynn Bahta, an immunization program clinical consultant for the Minnesota Department of Health.