Inclusion Criteria:  A LTCF resident will be eligible if they are ≥ 65 years and have received two doses of mRNA-1273 vaccine  Exclusion Criteria:  Immunocompromised individuals due to known or suspected immunodeficiency or due to receipt of immunosuppressive medication (e.g., steroids, biologics) Having had a severe adverse reaction (e.g., anaphylactic allergy) to mRNA-1273 or pneumococcal Prevnar-13 vaccine Having received pneumococcal polysaccharide vaccine within 12 months.