The first doses of Johnson & Johnson’s COVID-19 vaccine are set to arrive this week in Ontario, where one expert says they could do a world of good for some of the province’s most vulnerable. 

J&J’s one-shot vaccine, which does not need to be stored at ultracold temperatures, is perfect for populations like migrant workers, prison inmates and people experiencing homelessness, according to Dr. Isaac Bogoch, an infectious disease specialist at University Health Network in Toronto.

“Oh my god, we could do so