Earlier this week, I noted that a Washington Metro survey found that most of its former transit riders are unwilling to go back to riding transit until an effective COVID-19 vaccine is found. It appears they were right to say that, as a recent study by epidemiologists from Johns Hopkins University has concluded that, even after “adjusting for social distancing,” “public transit use . . . remained significantly associated with SARS-CoV-2 infection.”
The study found that “NPIs” (non-pharmaceutical interventions, e.g., masks & social distancing) “while visiting indoor and outdoor venues helps reduce SARS-CoV-2 transmission.” However, the two exceptions were public transport and places of worship. “Even NPIs may not be possible or sufficient” to prevent the virus’ spread on public transit, the study concludes. Although the study doesn’t say so, I suspect the problem is that transit vehicles are too small to permit true social distancing.
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