Carlos Araujo Preza, Doctor on the Pandemicâs Front Lines, Dies at 51 A pulmonologist, he tested positive for Covid-19 and was treated at the same hospital where he once saw patients. He died of the disease. Carlos Araujo Preza, a pulmonologist who was born in El Salvador, treated hundreds of Covid-19 patients before falling to the disease himself.Credit...via Araujo family Published Dec. 15, 2020Updated Jan. 1, 2021 This obituary is part of a series about people who have died in the coronavirus pandemic. Read about others . When the pandemic hit the Houston area in March, Dr. Carlos Ar...