The Covid-19 vaccine is free to every American — no exceptions. It’s possible, if unlikely, that you might receive a bill or something that looks like a bill from your health insurance company anyway. This just happened to my colleague Sara Morrison … She had received an explanation of benefits from her insurer, Cigna, saying she owed 57 cents for her first dose of the vaccine. … That may sound like a trivial amount, but anything that creates any more confusion or hesitancy about getting the Covid-19 vaccine is an obstacle to ending the pandemic. Previous research has shown that even small out-of-pocket costs, as little as $10, can lead patients to postpone lifesaving medical treatment.