Between the overland and seafaring parties of the expedition, about 300 men had started on the trip from Baja California. But no more than half of them reached San Diego. Most of the Christian Indians recruited to the overland parties had died or deserted; military officers had denied them rations when food started running low. Half of those who made it to San Diego spent months unable to resume the expedition, due to illness. Doctor Pedro Prat, who had also sailed on the "San Carlos" as the expedition's surgeon, struggled to treat the ill men, himself weakened from scurvy. Friar Fernando Parrón, who had sailed on the "San Carlos" as chaplain, had become weak with scurvy as well. Many men who had sailed on the "San Antonio", including captain Juan Pérez, had also taken ill with scurvy. Despite the efforts of Doctor Prat, many of the ill men died in San Diego.