If you get the delta variant, you could pass it on to up to 8 people, warns Dr. Gupta
Dr. Sanjay Gupta, CNN's chief medical correspondent, discusses the consequences of still missing Americans to be vaccinated and the presence of the delta variant, which is more contagious and has led to further increases in covid-19 cases.
In 31 US states, new infections last week are at least 50% higher than new cases the week before.