[https://www.nytimes.com/2021/06/18/us/politics/johnson-johnson-covid-vaccine.html?action=click&module=Spotlight&pgtype=Homepage](https://www.nytimes.com/2021/06/18/us/politics/johnson-johnson-covid-vaccine.html?action=click&module=Spotlight&pgtype=Homepage) >"Production problems and a brief pause on its use kept the one-dose vaccine from becoming the game changer that health officials across the country believed it would be."