It’s been just over a year since I began traveling again after lockdown. In September 2020, I returned to JFK to fly to Kenya before any airport restaurants or shops had reopened. Vast empty halls, shuttered kiosks and departures screens with only five or six flights gave the once-bustling hub a dystopian atmosphere. The few passengers carried negative PCR-test results and digital health forms and wore KN95 masks and face shields. My carry-on bulged with wipes, immunity boosters and extra masks....