nytimes July 23, 2021 11:01pm Purnell Choppin, 91, Dies; Researcher Laid Groundwork for Pandemic Fight #choppinpurnell19292021 #viruses #deathsobituaries #philanthropy #medicineandhealth #hugheshowardmedicalinstitute #rockefelleruniversity #research #science #news Purnell Choppin, 91, Dies; Researcher Laid Groundwork for Pandemic Fight He explored how viruses multiply. An accomplished administrator, he also turned the Howard Hughes Medical Institute into a global biomedical powerhouse.
