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Covid-19 Vaccines Can Be Updated for the Delta Variant. Here’s How.

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. Vaccines work by exposing the body to a harmless version or portion of a virus. This teaches our immune systems to recognize and fight the real virus if our bodies become infected with it. The mRNA-based vaccines developed for Covid-19—including the two made by Moderna Inc. and by Pfizer Inc. and partner BioNTech SE —rely on the outer spike proteins of the new coronavirus to prime our immune defenses. Spike proteins stud the outer surface of the virus and help it latch onto and infect healthy cells.

The Wall Street Journal - September 23, 2021

View the full story here: https://www.wsj.com/articles/covid-19-vaccines-can-be-updated-for-the-delta-variant-heres-how-11632399254