Black Americans distrust the government so much they're not participating in large numbers in COVID-19 clinical trials, and many say they won't get a COVID-19 vaccine – at least not until many others get it.

Although the first two large clinical trials of candidate vaccines have managed to include about 3,000 Black participants each, it hasn't been easy. And later trials might have even more trouble. 

Polls show that among racial and ethnic groups, Black Americans are the most hesitant to get a vaccine once one becomes available, and their skepticism is rising fast. In one September survey, only 32% of Black adults said they would get a vaccine, down from 54% in May.

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