Harvard scientists link psychological distress to "long-haul" suffering.
China remains almost completely isolated from the rest of the world as it adheres to a strict Covid Zero policy, with fewer flights in and out of Asia’s biggest economy than when the first cases were discovered.
US economic conditions are finely balanced as investors weigh up how hard the Fed will push in coming weeks.
Dr Anthony Fauci, who will retire from the National Institutes of Health in December, became the face of the US government's Covid response but found himself enmeshed in today’s polarised political battles.