Does wearing a mask work?

I‘m watching MSNBC reporting on the high number of deaths among black Americans in Prince Georges County Virginia, a suburb of Washington DC.

The County Executive is being interviewed and she isn’t wearing a mask. The reporter interviewing the County Executive is wearing a mask and he doesn’t ask her why she isn’t wearing a mask.

Wonder if not adhering to the appropriate protocols contributes to the higher number of deaths?

Prince George’s, one of the nation’s wealthiest majority-black counties, has reported the most coronavirus infections and some of the highest death tolls in the Washington region. In the hardest-hit neighborhoods, African American and Latino residents make up more than 70 percent of households. The grim statistics mirror data showing black Americans are more likely than white Americans to be infected with the novel coronavirus and more likely to die of it.

Washington Post