India has approved a new COVID vaccine that uses circular strands of DNA to prime the immune system against the virus SARS-CoV-2. Researchers have welcomed news of the first DNA vaccine for people to receive approval anywhere in the world, and say many other DNA vaccines may soon be hot on its heels.
The vaccine is applied to the skin rather than an injection. This would be the kind of thing that would be much easier to use in less-developed countries.
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