Covid-19 Vaccines Can Be Updated for the Delta Variant. Heres How. – The Wall Street Journal

The highly infectious Delta variant of SARS-CoV-2 has spread to more than 140 countries and accounts for 98% of U.S. Covid-19 cases. While U.S.-authorized vaccines provide strong protection against severe illness, they arent 100% effective and breakthrough infections, though rare and generally mild, do occur.

With this in mind, scientists are working to develop shots that would target the Delta variant specifically. The mRNA platform behind some vaccines might make this process relatively straightforward, according to Matthew Johnson, senior director of product development at the Duke Human Vaccine Institute.

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Covid-19 Vaccines Can Be Updated for the Delta Variant. Heres How. - The Wall Street Journal