In the US, for Latinos and COVID -19 doctors are seeing an alarming disparity.[ nothing to do with vitamin d by the way] The same reasons African Americans and British blacks are being infected more than whites.
Public health experts say Latinos may be more vulnerable to the virus as a result of the same factors that have put minorities at risk across the country. Many have low-paying service jobs that require them to work through the pandemic, interacting with the public. A large number also lack access to health care, which contributes to higher rates of diabetes and other conditions that can worsen infections.
For Latinos and Coronavirus, Doctors are Seeing an ‘Alarming’ Disparity - The New York Times

