The wastewater from 28 of 29 airline flights in in Kuala Lumpur, Malaysia, collected from June to December 31 of last year contained the sev
I am guessing this is the study! It's a single airline but we're talking inbound flights, too. Not repeated since 2023, or at least no additional data has been published. I still agree 'mask on every flight', especially on high-traffic weekends and during things like flu season, but worth taking a peek at the data.



















