Vaccine nasal sprays aim to ‘shut door’ on virus


Raw Story: Could delivering Covid-19 immunity directly to the nose — the area of the body via which it is most likely to be transmitted — help conquer the pandemic?

The World Health Organization says clinical trials are underway to evaluate eight nasal spray vaccines that target Covid-19.

The most advanced effort so far by China’s Xiamen University, the University of Hong Kong and Beijing Wantai Biological Pharmacy has completed phase-2 trials.

“When the virus infects someone it usually gets in through the nose,” said researcher Nathalie Mielcarek who is working with the Lille Pasteur Institute to develop a nasal spray vaccine against whooping cough.

“The idea is to shut the door.”

An article published in Scientific American in March urged developing nasal spray vaccines because they have an immediate effect on the virus in an infected person’s mucus.

There they trigger production of an antibody known as immunoglobulin A, which can block infection.

“This overwhelming response, called sterilising immunity, reduces the chance that people will pass on the virus,” said the article.

The vaccines currently available offer strong protection against severe forms of Covid-19 but are less reliable at preventing the spread of the virus.

Stimulating immunity directly in the nose “lowers the risk of infecting other people”, said Mielcarek.  Read more..


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  1. I’ve been telling VT readers about inhaling ethyl alcohol vapors for about 18 months. EverClear is 95% pure EA.

    EA has long been shown to attack the virus protein layer that disguises it, making it so your own antibodies can “see” and attack it.

    Funny….it appears nobody really wants a solution when it is so straight forward as inhaling EA into the place the virus grows….yet totally ignored at Vt.

  2. Why not just use a synchronized swimmer’s nose clip? It has been fully tested for years by many synchronized swimmers and there doesn’t seem to be side effects or the swimmers would not be allowed to use it. Proven safe and effective!

  3. A nasal spray vaccine that works, has the potential to change the whole anti-vaccination ballgame. It’s “the needle” that makes it so scary.

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