The coronavirus Delta variant is much more than the other strain, according to the CDC. Now, most cases in the US are the Delta variant, and not the other variant. Because of this variant, the CDC is recommending people to wear masks indoors again. It is good to get vaccinated because CDC data shows that vaccinated people are 3 times less likely to catch Covid-19, and 10 times less likely to die from it. If a vaccinated person catches the disease, they should still wear a mask and practice social distancing, because they are just as contagious as unvaccinated people.
Source: https://news.yahoo.com/youre-