A clerk wears a face mask as she stands outside a store at a mostly empty shopping mall in Beijing, Saturday, March 7, 2020. Crossing more borders, the new coronavirus hit a milestone, infecting more than 100,000 people worldwide as it wove itself deeper into the daily lives of millions, infecting the powerful, the unprotected poor and vast masses in between. (AP Photo/Mark Schiefelbein)

March 7, 2020