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Different subtypes of vaccines have been developed to help protect populations from COVID-19. Currently, three vaccines have been authorized by the United States Food and Drug Administration for emergency use to combat the COVID-19 pandemic. With COVID-19 vaccination rates increasing, it is important to know whether immunodeficient patients have the capacity to mount an immune response with the available vaccines.Case Report   A 78-year-old female with Common Variable Immunodeficiency and anti-IgA antibodies who is naïve to IVIgG treatment responded positively to a COVID-19 mRNA vaccine. Successful seroconversion was proved by having positive COVID-19 spike protein IgG antibodies weeks after the vaccination. Her recent IgG, IgA, and IgM levels were all significantly reduced. Previously, she had no response to the polysaccharide pneumococcal vaccine, but did maintain titers afterTdap vaccination.Discussion   Immunodeficient patients are a susceptible population during a pandemic. Unfortunately, there is a paucity of research on the infectivity, vaccination, and outcome of these patients during the COVID-19 outbreak. Our patient with CVID was able to respond to protein/toxoid vaccines, but did not respond to polysaccharide pneumococcal vaccine. After inoculation with an mRNA COVID-19 vaccine she was able to create COVID-19 spike protein IgG antibodies.Conclusion   We present a case of successful vaccination to COVID-19 by an mRNA vaccine in an IVIgG naïve CVID patient.

The Successful Vaccination of an IVIgG Naive CVID Patient with an mRNA COVID-19 Vaccine