It is a given these things are worth it, as long as they're done properly.
https://www.researchgate.net/figure/Reduction-in-infection-r...
That paper is about mandatory masking and social distancing at the population level. It does not speak to the question of whether it's "worth it" to wear a mask on the train if you're the only one who is doing it.
That paper is about mandatory masking and social distancing at the population level. It does not speak to the question of whether it's "worth it" to wear a mask on the train if you're the only one who is doing it.