The more time that it takes to get people vaccinated up to a herd immunity level, which people think is about 80 percent, the longer we’re going to see these outbreaks of Covid-19 that will inevitably create more mutations, more variants. — Dr. Irwin Redlener, the director of the Pandemic Resource and Response Initiative at the Columbia University Earth Institute
The more time that it takes to get people vaccinated up to a herd immunity level, which people think is about 80 percent, the longer we’re going to see these outbreaks of Covid-19 that will inevitably create more mutations, more variants. — Dr. Irwin Redlener, the director of the Pandemic Resource and Response Initiative at the Columbia University Earth Institute