Complex sentence: Brincidofovir was administered to the patient in the Ebola virus disease case in the US in 2014; the patient, who had been in critical condition, died 4 days after brincidofovir treatment was started.
Split into simpler sentences: Brincidofovir was administered to the patient in the Ebola virus disease case in the US in 2014. The patient, who had been in critical condition, died 4 days after brincidofovir treatment was started.