A virus in the Paramyxoviridae family, from the genus Morbillivirus, which causes measles, can be seen through the lens of a microscope. (BSIP / Universal Images Group via Getty Images)
Pennsylvania Gov. Josh Shapiro greets people at the Commemoration Ceremony on the fifth anniversary of the Tree of Life synagogue attack on October 27, 2023 in Pittsburgh, Pennsylvania. (Justin Merriman / Getty Images)