90% of the Population Needs to Be Vaccinated for Herd Immunity From the Delta Variant

Because the COVID-19 Delta variant is much more transmissible (translating to a higher R rate of 50-100% higher than a year ago) and mRNA vaccines are 90% effective, we need 90% of the population to be vaccinated to achieve herd immunity. Unfortunately that seems unlikely due to the politicization of the vaccine.

Read Delta Variant - Everything you need to know.