Knowledge, Attitudes, and Concerns Regarding COVID-19 Vaccination Among Unvaccinated Elderly People in the Aseer Region, Saudi Arabia.

Background: Vaccination is the best weapon to prevent any disease, especially pandemics like COVID-19, and building herd immunity is the best way to control the disease's spread. On one side, vaccine availability is important, and on the other, its successful distribution is faced with difficulty in a wide geographical area. Availability and distribution go hand in hand, which is the public health challenge.