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SARS‑CoV‑2 (COVID-19)@COVID19_disease · Sep 6, 2026

🚨 BREAKTHROUGH: Scientists from McMaster University have developed AeroVax a breathable vaccine mist that delivers…

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Summary

Scientists at McMaster University developed AeroVax, an inhaled vaccine mist that delivers immunity directly to the lungs in 2 minutes using viral vectors. A Phase 1 trial showed the chimpanzee adenovirus (ChAd) formulation safely triggered robust T cell, innate immune, and antibody responses in the lungs, potentially offering a needle-free alternative that stops respiratory viruses at infection sites.

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  1. #1

    🚨 BREAKTHROUGH: Scientists from McMaster University have developed AeroVax a breathable vaccine mist that delivers immunity directly to the lungs in just 2 minutes.🧵

  2. #2

    First, the problem: Current COVID shots are great, but they work mostly in the blood. Viruses like SARS-CoV-2 enter through your nose and lungs where vaccine-induced antibodies often don't reach well enough. That's a blind spot. Especially for variants.

  3. #3

    Enter Drs. Fiona Smaill & Zhou Xing. They built a nebulizer that turns a vaccine into an aerosol mist. You inhale it for 2 minutes. It goes straight to the lungs the front door of infection. No needles. No waiting in line for a shot.

  4. #4

    They ran a Phase 1 trial (NCT05094609) on healthy adults who already had 3 mRNA shots. Some had prior COVID, some didn't. They tested two viral vectors: human adenovirus (HuAd) and chimpanzee adenovirus (ChAd).

  5. #5

    The results? Both were safe at all doses. But ChAd blew HuAd out of the water on immunogenicity. The optimal dose of ChAd triggered tripartite immunity: 1. T cells 2. Trained innate immunity 3. Antibodies All in the lungs.

  6. #6

    This is huge because: · Needle-free = easier rollout, less waste, less fear. · Lung-delivered = stops viruses at the gate, not after they've breached. · Could be rapidly adapted for flu, RSV, even future pandemics.

  7. #7

    This is a very major breakthrough. Please do follow us for evidence-based scientific explanations and insights.

  8. #8

    pubmed.ncbi.nlm.nih.gov/40603330/