The cardiomyositis that is a rare adverse effect of mRNA-based COVID vaccines is due to immune cell activity as a result of increased levels of the chemokines CXCL10 and interferon-γ (IFN-γ). Blocking CXCL10 and IFN-γ could prevent muscle cell damage in cell culture, and cardiomyositis in animal models. The findings, reported in the Dec. 10, 2025, issue of Science Translational Medicine, suggest a way of mitigating the risk of cardiomyositis.

Restricting the recommended use of COVID-19 vaccines in the U.S. wasn’t enough. Now the Children’s Health Defense (CHD) is trying to get the FDA to revoke the BLAs for all versions of the Moderna Inc. and Pfizer Inc.-Biontech SE COVID-19 vaccines.

Ena Respiratory Pty Ltd. raised an AU$34 million (US$22.4 million) series B round to advance INNA-051, its nasal spray for symptomatic viral respiratory infections, to phase II trials. New investors in the Melbourne-headquartered company include the Gates Foundation and Flu Lab. Existing investors Brandon Capital, Uniseed and Stoic Venture Capital also participated in the round.

Even though the U.S. CDC is operating on a skeleton crew due to the partial government shutdown, it is updating its immunization schedules to adopt the COVID-19 and chickenpox vaccine recommendations the Advisory Committee on Immunization Practices (ACIP) made at its September meeting.

While the discussions and votes at the past two meetings of the U.S. CDC Advisory Committee for Immunization Practices (ACIP) have generated a lot of controversy and resulted in some states and medical groups issuing their own vaccine schedules, the truth is that the newly reconstituted committee’s recommendations to date are still in line with, or more generous in some instances than, global norms.

The second day’s meeting of the U.S. CDC’s Advisory Committee for Immunization Practices (ACIP) took up guidelines related to COVID-19 vaccines, of which an outspoken skeptic is Health and Human Services Secretary Robert Kennedy – who in June fired all 17 members of ACIP and replaced them with names more to his liking.

When Robert Kennedy Jr. announced the cancellation of 22 projects related to mRNA vaccines and the end of new investments in that technology, the U.S. Secretary of Health only mentioned their use against respiratory viruses, without referring to other applications. The vaccines whose safety and effectiveness Kennedy is questioning are based on the same molecular principles as cancer vaccines under development. “Continued investment in mRNA technology is essential to fully realize its potential in oncology and ensure that promising strategies like neoantigen-based vaccines reach clinical application.” Kazuhiro Kakimi, professor at the Department of Immunology at Kindai University Faculty of Medicine, told BioWorld.

An ongoing concern for scientists is that there will be across-the-board funding cuts. This is already happening in mRNA research, where reductions affected coronavirus-related projects. During the pandemic, efforts focused on this pathogen, and once the health emergency was over, grants for antivirals were eliminated. However, these drugs could stem future outbreaks. Despite the cuts, recent research continues to demonstrate the potential of mRNA, not only for the development of antivirals, but also for obtaining more effective and longer-lasting vaccines.

Just three days before the U.S. CDC’s reconstituted Advisory Committee for Immunization Practices (ACIP) is scheduled to discuss and possibly vote on the COVID-19, hepatitis B and MMRV vaccines, Health and Human Services Secretary Robert Kennedy added five new members to the panel.