declining over time which is why people are talking about boosters. offers some efficacy preventing more serious symptoms but doesn't prevent infection and transmission. natural immunity does. we have overwhelming evidence in the scientific literature that natural immunity is robust, durable, prevents not only the infection but prevents transmission. i'm the safest person be around on campus but i'm the person being sent home. >> i'm glad you are raising the issue of natural immunity. it needs to be talked about at uc irvine and around the country. got dave chapelle revels in the world back lash, christopher columbus gets canceled. it is friday follies with special guest joe piscopo. don't the next.