Scientists at the University of Pittsburgh have tested a broadly neutralizing antibody that binds the stem of a protein against H5N1 avian influenza, which prevented severe disease in nonhuman primates and was effective for at least 8 weeks. The scientists remark on the potential of the design developed by Astrazeneca plc against a possible outbreak of the influenza A virus.
A recent study published in Nature Communications by researchers at the National Institute of Allergy and Infectious Diseases (NIAID) and collaborators evaluated a replicating RNA (repRNA) vaccine designed to target a contemporary bovine-derived H5N1 virus and compared its efficacy to a vaccine based on a historical H5N1 strain used in stockpiled vaccines.
While Moderna Inc. plans to cut its expenses by $1 billion in 2025, the company has received a little breathing room by a hefty U.S. Department of Health and Human Services (HHS) grant. The Biomedical Advanced Research and Development Authority awarded Moderna roughly $590 million to support late-stage development of its mRNA-based avian-variant vaccines and to increase the number of clinical trials for another five additional subtypes of pre-pandemic influenza.
TC Biopharm (Holdings) plc intends to begin proof-of-concept preclinical studies for its lead therapeutic TCB-008, to treat H5N1, or bird flu. TCB-008 is an allogeneic, unmodified cell therapy comprised of activated and expanded γδ T cells.
There are currently three approved vaccines against the H5N1 avian influenza virus. However, they present challenges for large-scale virus cultivation in case of an outbreak and rapid update of vaccine strains to keep pace with the virus’s evolution. Messenger RNA (mRNA) vaccine platforms may offer a promising alternative to traditional vaccine methods to face H5N1 threats.
First, the good news about pandemics – and in 2024, there was big “good news.” Science Magazine named lenacapavir (Gilead Sciences Inc.) as the Breakthrough of the Year. In two separate trials, lenacapavir prevented HIV transmission with 100% efficacy in cisgender African women and 99.9% efficacy in men and gender-diverse persons when administered twice a year.
Labcorp Holdings Inc. launched its new H5N1 bird flu molecular test for humans in the U.S. as an international outbreak of the disease continues to spread in cows and poultry – and people. As BioWorld reported recently, just one mutation would make the flu variant highly transmissible in humans.
Although it does not generally infect humans, a single mutation of the H5N1 virus in the highly pathogenic avian and bovine clade 2.3.4.4b could overcome this barrier and possibly trigger a pandemic.
Although it does not generally infect humans, a single mutation of the H5N1 virus in the highly pathogenic avian and bovine clade 2.3.4.4b could overcome this barrier and possibly trigger a pandemic. Scientists at The Scripps Research Institute have warned of this possibility after studying the three-dimensional structure of the viral hemagglutinin and seeing how a change in one amino acid would make it more suitable for the human cell receptor. The researchers stress the need to monitor new mutations of this virus in order to act quickly in case the global jump to our species occurs.
Arcturus Therapeutics Holdings Inc. has received IND clearance from the FDA to begin a phase I study of ARCT-2304, a self-amplifying mRNA (sa-mRNA) vaccine candidate for active immunization to prevent pandemic influenza disease caused by H5N1 virus.
