SPH Dean Dr. Varduhi Petrosyan Sits Down with Hetq: “Dr. Petrosyan covers the spread of COVID-19, herd immunity, and more.” /ARM/newsExpandDetails news SPH Dean Dr. Varduhi Petrosyan Sits Down with Hetq: “Dr. Petrosyan covers the spread of COVID-19, herd immunity, and more.” /ARM/ Read MorenmuradyanJun 19Comments Disabled