People hold a banner calling people to get vaccinated against Ebola at the Christian Maternity Hospital in Freetown, Sierra Leone, Thursday, Dec. 5, 2024. (AP Photo/Dennis Alfred Cole)

People wait to be administers with a single-dose of Ebola vaccine, at the Christian Maternity Hospital in Freetown, Sierra Leone, Thursday, Dec. 5, 2024. (AP Photo/Dennis Alfred Cole)

A health worker administers a single-dose of Ebola vaccine, to a man at the Christian Maternity Hospital in Freetown, Sierra Leone, Thursday, Dec. 5, 2024. (AP Photo/Dennis Alfred Cole)

A health worker administers a single-dose of Ebola vaccine, to a man at the Christian Maternity Hospital in Freetown, Sierra Leone, Thursday, Dec. 5, 2024. (AP Photo/Dennis Alfred Cole)

A health worker prepare to administers a single-dose of Ebola vaccine, to a man at the Christian Maternity Hospital in Freetown, Sierra Leone, Thursday, Dec. 5, 2024. (AP Photo/Dennis Alfred Cole)