August 24 is the feast day of Our Lady, Health of the Sick.
During the 17th century, the Church started to highlight Mary's role as an intercessor for all the sick, invoking her under the title of "Health of the Sick."
This was in direct connection to the plague in Europe and how many people turned to her in their time of need.
Here is the prayer recited by Pope Francis in March 2020 that invokes Mary under this title, this time in reference to COVID-19.