This map was created with publicly available data and uses the Leaflet JavaScript library to render the data. I will make updates to the function of the map as I am using it to learn more about Leaflet.
It shows the ACS Place or Neighborhood (La Jolla is a neighborhood in San Diego) for all the locations that Moderna is running P 2/3 trials for COVID-19 vaccines in children age 6 months - 12 years old, along with the percent minority (defined as non-white) in the census tract for the county of the location.
The listed locations are (clicking on a location will zoom the map there):
The ArcGIS REST service for the US Census data is ACS 5 year 2015-2019 vintage located here.
The site list comes from the list of Sites when your child is may be eligible after answering the 5 questions at www.kidcovestudy.com.