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aH5N8c
- Development stage
- Phase 2
- Lead developer
- CSL Seqirus
- Modality
- Vaccines & Immunotherapeutics
- Administration
- Intramuscular
01
Overview
aH5N8c is a monovalent, inactivated influenza A (H5N8) virus vaccine developed for the prevention of disease caused by the H5N8 subtype of avian influenza. It is based on an inactivated (killed) strain of the H5N8 virus—specifically, the A/Astrakhan/3212/2020 (H5N8)-like strain (clade 2.3.4.4b)—and is formulated to stimulate an immune response that protects against bird flu in humans at risk of exposure[4][7]. The vaccine uses immunostimulant mechanisms and may be adjuvanted to enhance immunogenicity[6][7]. It is administered as two intramuscular doses at least three weeks apart and has been approved for use in adults within several European countries since October 2023[4][7].
- Brand names
- Zoonotic influenza vaccine Seqirus
- Other names
- Monovalent inactivated influenza A vaccine SeqirusInfluenza A virus vaccine H5N8 (Seqirus)
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