...what "Care for the Sick" evolved into?

Because of Jesus's particular emphasis on the care of the sick, the Roman Catholic Church has become the largest non-governmental provider of healthcare in the world and is responsible for founding and running networks of hospitals across the world where medical research continues to be advanced. The Catholic Church has around 18,000 clinics, 16,000 homes for the elderly and those with special needs, and 5,500 hospitals — with 65 percent of them located in developing countries. Read more about the history of the Catholic Church's involvement in the development of modern science and medicine here!
So now you know!