Zydus Cadila seeks approval for its needle-free COVID vaccine ZyCOV-D; here's how it works
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Another vaccine
According to a TOI report, Ahmedabad-based Zydus Cadila, which is also one of the companies developing coronavirus vaccine, has sought emergency use approval for its three dose, needle-free COVID-19 vaccine, ZyCOV-D
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How does it work
ZyCoV-D is a plasmid DNA vaccine that uses a non-replicating version of a DNA molecule called plasmid, which helps prepare a harmless version of the spike protein present on the SARS-COV-2 membrane.
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Three doses
Unlike the other COVID vaccines currently being administered in India, ZyCOV-D will be a three dose regimen. According to Zydus Cadila, the three doses of ZyCoV-D are to be administered on day 0, day 28, and day 56. Reportedly, the company is also working on a two-dose vaccine.
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Going needle free
Unlike any other COVID vaccine, Zydus Cadila is currently seeking approval for its needle-free vaccine, which will use the ‘Jet Injector' technique to administer the three doses. Rather than injecting the drug by piercing into the skin, the vaccine will use high-pressure to inject the liquid directly through the upper layer of the skin and into the underlying tissues.
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An older technique
While it may seem like a new discovery into the world of vaccines, it is an old technique, first demonstrated in 1866. This method of vaccination was also used during the 1960s for smallpox vaccination drives.