So my cardiologist suggested the Pfizer vaccine as it ,according to current medical literature, has the bet protection rate. She stated that the Moderna is less effective and the 1 shot vaccine should not be used for immuno compromised persons as it has shown the lowest level of protection. Was also informed that it is concieveable that someone could still get COVID after the vaccine , but it would be a much milder case than if you were not vaccinated. Please check with your Drs before proceeding!