For a long time, months before the epidemic brought the world to a halt, one Twitter account "קורנה COVID19 עדכונים " ["@CoronaVirusHebr"] frequently reported on the virus and provided scientific data on its spread. The account gained popularity and about 10k followers. The account operator is none other than Dr. Uri Shalit.
Uri did not limit himself to Twitter and like other researchers at the Technion, joined the efforts to fight and control the epidemic. Joined with Dr. Guy Rothblum of the Weizmann Institute, they led a team of researchers who developed a mathematical model which helps doctors reach patients with an increased risk to effected by the virus.
An interview with Uri in the Makor Rishon on Twitter and the plague.
An article in The Marker magazine about the mathematical model.
(Both in Hebrew)