June 25, 2026
11 11 11 AM
Clay Aiken Speaks Out on Tense On-Air Exchange With Kelly Ripa in 2006
Power outages hit France as it records hottest day since measurements began
Miranda Kerr’s “Fresh, Natural” Drugstore Foundation Pick Is Only $9
Drowning deaths soar in France as Europe buckles in peak of heatwave
Breaking Down Love Island’s Code Words for Sex: French Fries and More
Trump-backed political outsider wins Colombia election, initial count shows
Kyle Busch’s Wife Shares Father’s Day Plans Before His Death
Ethiopia PM’s party wins landslide as fears grow of new conflict
Daveigh Chase’s Mom Details Actress’ Addiction Struggles Before Death
Zelensky returns highest Polish honour after award stripped
Latest Post
Clay Aiken Speaks Out on Tense On-Air Exchange With Kelly Ripa in 2006 Power outages hit France as it records hottest day since measurements began Miranda Kerr’s “Fresh, Natural” Drugstore Foundation Pick Is Only $9 Drowning deaths soar in France as Europe buckles in peak of heatwave Breaking Down Love Island’s Code Words for Sex: French Fries and More Trump-backed political outsider wins Colombia election, initial count shows Kyle Busch’s Wife Shares Father’s Day Plans Before His Death Ethiopia PM’s party wins landslide as fears grow of new conflict Daveigh Chase’s Mom Details Actress’ Addiction Struggles Before Death Zelensky returns highest Polish honour after award stripped

Intranasal vaccine against H5 avian flu provokes broad immune response in adults in phase 1 trial

Three of five groups of eight participants each received low, medium, or high doses of the clade 2.1 influenza A/H5 (A/Indonesia/05/2005) recombinant hemagglutinin glycoprotein (rH5) vaccine combined with an adjuvant; one group received 100 µg of an unadjuvanted rH5 vaccine; and one group received placebo. All participants received an intramuscular H5 booster 6 months later.

Participants who received the adjuvanted vaccine had higher levels of protective antibodies (immunoglobulin [Ig] G and A), more memory immune cells, and a better ability to neutralize infected cells.

Only recipients of the boosted intranasal vaccine showed strong immune priming. Even without a booster, the intranasal vaccine triggered mucosal and systemic immunity, which other intranasal recombinant H5 flu vaccines have not achieved in clinical trials. It also was safe and well-tolerated.

The immune system’s ability to recognize multiple strains of H5N1 virus is key because they change over time, co-lead author Meagan Deming, MD, PhD, said in a university news release. “The use of the adjuvant also suggests this approach might allow for lower doses of the vaccine, which could make our current vaccine stocks available to more people in the event of an outbreak,” she said.

Corresponding author Justin Ortiz, MD, said that global transmission of H5N1 in animals, including spillover into people, underscores the need for effective countermeasures. “This trial shows that this intranasal, shelf-stable H5N1 vaccine could play a major role in pandemic preparedness, offering a practical and scalable way to help protect people from evolving strains of the virus,” he said.

11 thoughts on “Intranasal vaccine against H5 avian flu provokes broad immune response in adults in phase 1 trial

  1. Your blog is a testament to your dedication to your craft. Your commitment to excellence is evident in every aspect of your writing. Thank you for being such a positive influence in the online community.

  2. I just wanted to drop by and say how much I appreciate your blog. Your writing style is both engaging and informative, making it a pleasure to read. Looking forward to your future posts!

  3. Hello Neat post Theres an issue together with your site in internet explorer would check this IE still is the marketplace chief and a large element of other folks will leave out your magnificent writing due to this problem

  4. Your blog is a testament to your dedication to your craft. Your commitment to excellence is evident in every aspect of your writing. Thank you for being such a positive influence in the online community.

Leave a Reply

Your email address will not be published. Required fields are marked *