It will be hard to achieve herd immunity against COVID-19 before the end of the summer, President Joe Biden said in an interview that aired on Sunday. “The idea that this can be done and we can get to herd immunity much before the end of next—this summer, is very difficult,” Biden told CBS. Herd immunity is a form of protection against a disease. It can be achieved through vaccination. The United States has steadily increased the pace of vaccinations against the CCP (Chinese Communist Party) virus, which causes COVID-19, but reaching a level where herd immunity is believed to be possible will take nearly a year at the current rate. Dr. Anthony Fauci, one of Biden’s top medical advisers, has said the threshold is a minimum of 70 percent of Americans being vaccinated. The United States has approximately 330 million people. As of Feb. 7, 31.5 million, or 9.5 percent …