The Delta variant is sufficiently contagious that we can't achieve any real herd immunity through vaccination. It's still important to get vaccinated to protect yourself.
Those calculations of herd immunity threshold percentages were usually over simplified based on the assumption that immunity is a binary condition. But in reality while vaccinated people are less likely to suffer severe symptoms they can still get infected and spread the virus.
https://www.businessinsider.com/delta-variant-made-herd-immu...
Those calculations of herd immunity threshold percentages were usually over simplified based on the assumption that immunity is a binary condition. But in reality while vaccinated people are less likely to suffer severe symptoms they can still get infected and spread the virus.