Catholics from across Argentina have flocked to churches to pray for the recovery of native son Pope Francis, the first Latin American pope in history.

Our community is living these days of apprehension in prayer,” said Father Fernando Laguna. “It’s the only way we can be close to the pope. It’s our way of sending him a big kiss and hug.”

Concerns over Pope Francis' health have mounted in recent years as have questions about his succession. Here's what we know.