We are living on borrowed time to an extent, with many believing we successfully tamed COVID-19. That’s because a more radical variant could break out at any moment, and change the rules of the game. Even the wealthiest nations are hopelessly unprepared in terms of vaccine injections that many citizens shun. Could nasal vaccines help stop transmission?
Could Less-Intrusive Nasal Vaccines Be the Answer?
Conventional vaccines require a needle injection. Fake news has incorrectly convinced many these are dangerous. Nasal vaccines on the other hand are less intrusive, because they introduce immunity through the inner surface of the nose. Moreover, there’s a possibility users may someday be able to administer these themselves.
How Nasal Vaccines Could Help Stop Transmission
Intramuscular vaccine injections ‘train our immune systems’ by simulating a COVID-19 attack. This teaches them to learn how to counter it. In this way, they greatly help us avoid becoming seriously ill. However, they do not effectively prevent infections.
But intranasal vaccine sprays work differently, as confirmed in The Guardian on August 20, 2022. That’s because they target mucosa immune cells lining our nasal cavities, and these are our primary defense against respiratory infections.
Medical scientists are hoping nasal vaccine sprays will help us avoid catching COVID-19 infections in the first place. A combination of these, and conventional vaccines could theoretically stop the spread, and end the pandemic.
That’s Why Medical Scientists Are Calling for Fresh Focus
The Guardian advises intramuscular vaccine injections are ‘equivalent to running at a steady speed on a treadmill that is accelerating’. However, nasal spray vaccines could enable us to accelerate and overtake the transmission rate.
Dr. Sandy Douglas is a member of the team that delivered the Oxford/AstraZeneca vaccine. She says ‘the failure of injected vaccines to produce immunity in the respiratory tract … is a major shortcoming’ in the global strategy.
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