San Francisco 49ers mascot Sourdough Sam entertains Malika Kikkeri (center) and her mother Usha Kikkeri (left) before they receive the COVID-19 vaccine during a vaccination clinic for Special Olympics athletes, coaches and family members at Levi s Stadium in Santa Clara, California. The 49ers partnered with the County of Santa Clara Health System and the Santa Clara County Board of Supervisors to provide vaccines to Special Olympics athletes and their families. Justin Sullivan/Getty Images
Spring has sprung, and there is a sense of relief in the air. After one year of lockdowns and social distancing, more than 171 million COVID-19 vaccine doses have been administered in the U.S. and about 19.4 percent of the population is fully vaccinated.