Patients arrive to receive the the single-dose Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Indiana Gov. Eric Holcomb speaks after receiving his Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Patients arrive to receive the the single-dose Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Indiana Gov. Eric Holcomb receives his Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Rep. Robin Shackleford speaks after receiving her Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

A patient leaves after receiving the the single-dose Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Paul Winters receives the single-dose Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Patients receive the the single-dose Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Indiana Gov. Eric Holcomb speaks after receiving his Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)

Rep. Andre Carson, D-Ind., speaks after receiving his Johnson & Johnson COVID-19 vaccine during the state's first mass vaccination clinic at the Indianapolis Motor Speedway, Friday, March 5, 2021, in Indianapolis. The state health department said nearly 17,000 people had filled up four days of appointments for the speedway clinic being held Friday through Monday. (AP Photo/Darron Cummings)