Proper noun
Tierno (plural Tiernos)
A surname.
“In large masses, there is no system that can effectively prevent another person from giving germs to a second individual,” said Philip Tierno, a clinical professor of pathology at New York University’s Grossman School of Medicine. Source: Internet
When you are dealing with hundreds or thousands of people in an AUDITORIUM, some of whom will carry the virus you WILL NOT BE absolutely PROTECTED," Dr. Tierno, using all-caps to help make his points, wrote in an email. Source: Internet