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Nasal Spray Vaccine Prevents Infection From Highly Pathogenic H5N1 Virus

The nasal vaccine prevented H5N1 infection in hamsters and mice, showing strong immune responses and outperforming traditional injection methods, researchers said.

Summary by News Medical
Researchers at WashU Medicine have developed a nasal vaccine against the highly pathogenic H5N1 avian influenza virus, or bird flu, which has jumped from wild birds to livestock to humans.

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Scientists at the University of Washington in the United States found that it blocks the advance of the virus in laboratory models

·Buenos Aires, Argentina
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A team of scientists has developed an intranasal vaccine against the H5N1 avian influenza virus that causes a strong immune response and prevents infection in mice. In addition, the vaccine remains effective even if there has been immunization with another vaccine or a previous influenza infection. The entry An intranasal vaccine against avian influenza prevents infection in mice was first published in Digital Process.

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Infobae broke the news in Buenos Aires, Argentina on Friday, January 30, 2026.
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