Summoning seniors: Big new push to vaccinate older Americans

President Joe Biden delivers remarks about vaccinations, in the State Dining Room of the White House, Tuesday, April 6, 2021, in Washington. (AP Photo/Evan Vucci)

Linda Busby, 74, stiffens up as she receives the Johnson & Johnson COVID-19 vaccine at the Aaron E. Henry Community Health Service Center, Wednesday, April 7, 2021, in Clarksdale, Miss. Busby joined a group of seniors from the Rev. S.L.A. Jones Activity Center for the Elderly that were given a ride to the health center for their vaccinations. The Mississippi Department of Human Services is in the initial stages of teaming up with community senior services statewide to help older residents get vaccinated. (AP Photo/Rogelio V. Solis)

Wilbert Marshall, 71, looks away while receiving a COVID-19 vaccine, from Melissa Banks, right, a nurse at the Aaron E. Henry Community Health Service Center in Clarksdale, Miss., Wednesday, April 7, 2021. Marshall was among a group of seniors from the Rev. S.L.A. Jones Activity Center for the Elderly who received a vaccination. The Mississippi Department of Human Services is in the initial stages of teaming up with community senior services statewide to help older residents get vaccinated. (AP Photo/Rogelio V. Solis)

CLARKSDALE, Miss. — The first hurdle was getting on the bus.