Vaccines could affect how the coronavirus evolves - but that's no reason to skip your shot
- Written by Andrew Read, Professor of Biology, Entomology and Biotechnology, Penn State
Vaccines against COVID-19 are the safest – and fastest – way to prevent the spread of variants.Luis Alvarez/ DigitalVision via Getty ImagesTakeaways
A 2015 paper on a chicken virus showed vaccines could enable more deadly variants to spread – in chickens.
But that outcome is rare. Only a minority of human and animal vaccines have...