Archived articles

Gigi gronvall

A residential building in the Ukrainian city of Lysychansk after intense shelling on March 31
War in ukraine
The ongoing crisis in Ukraine
Published March 31, 2022
Five Johns Hopkins experts discuss the near- and long-term global consequences of the conflict, including supply chain disruption, humanitarian disaster, and the heightened potential for a broader war
Close up of an antigen test in someone's hands
Q+A
Omicron tests the limits of COVID-19 testing
Published Dec 22, 2021
The U.S. is still on its heels when it comes to COVID-19 testing. Will mailing free at-home tests make a difference? Immunologist Gigi Gronvall explains