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.

The U.K.’s drugs regulator has approved the COVID-19 vaccine from Valneva SE – although the shot is likely only to be offered to health workers in Scotland after the Westminster government rejected it because rivals beat it to market.

NEC Corp. subsidiary NEC Oncoimmunity AS recently received $4.8 million from the Coalition for Epidemic Preparedness Innovations to fund the development of vaccines for SARS-CoV-2 variants and other betacoronaviruses.

Even as many in the U.S. are looking for the end of the COVID-19 public health emergency, Health and Human Services (HHS) Secretary Xavier Becerra reinforced expectations April 5 that he will continue the emergency declaration into the summer, if not beyond. When asked during a Senate Finance Committee budget hearing if he saw the emergency ending this summer, Becerra declined to give a date, but reiterated his commitment to give stakeholders at least 60 days’ notice.

After COVID-19 reached a pandemic peak in January due to the omicron variant, infections in the U.S. are now hitting the lowest levels since March of 2020. During the past week, there were 195,963 confirmed SARS-CoV-2 infections in the country, according to Johns Hopkins University data. That is 5.5% fewer infections than the same week two years ago and 56% fewer than last year. Deaths are also down to 5,602 for the week, although there were lower points in the spring and summer months of 2020 and 2021.