The variant is hitting hard in places like California: Should we be worried in Indiana? “Well it’s important for people to know that viruses mutate. It’s what they do, and we always knew that we were going to deal with different types of mutations. This Delta variant is concerning, however, because it’s been proven to be more transmissible, which means it’s easier to hop from one person to another person. We know that India saw its cases start to trend down and then they had another spike, a really severe spike that overwhelmed their health care systems with the Delta variant. It now accounts for the majority of cases in the United Kingdom, the Delta variant. And in the United States, it’s 20% of cases. So that’s why we’re concerned. Here’s the good news. The good news is that the Moderna and the Pfizer vaccines both so far are working really well against all variants, which is why it’s incredibly important for us to continue to encourage vaccinations, particularly in minority communities, particularly in rural communities, particularly in men and in younger people. All these are groups of people who have lower than average vaccination rates,” Adams said.