Experts worry that immunocompromised people and those who unable to access the vaccine have been forgotten
Just as the troubling Delta variant was spreading through the US, Charis Hill got a worrying call from their doctor.
The medications Hill takes to treat their spondylitis affect their immune system, and they knew the Covid-19 vaccine might not work as well for them as it does for others. So weeks after their second shot, they got a test.
