Even from his own sickbed in Africa, American physician Kent Brantly continues putting the well-being of others before his own.

Brantly, a medical missionary in West Africa, and fellow American Nancy Writebol both contracted Ebola last weekend. They spent the past several days under quarantine and are struggling to survive.

On Wednesday, an experimental serum arrived in Monrovia, Liberia, but there was only enough dosage for one patient. . .

The organization said Brantly, a married father of two young children, took a “slight turn for the worse overnight.” Samaritan’s Purse says Brantly and Writebol, 60, remain in grave but stable condition.