Longitudinal serum proteomic signatures associated with rapid SARS-CoV-2 IgG waning after breakthrough infection in elderly adults: a nested case-control study
In previously vaccinated older adults, SARS-CoV-2 breakthrough infection induces hybrid immunity, but SARS-CoV-2-specific IgG antibodies may still decline rapidly. Longitudinal serum proteomic correlates of rapid IgG waning in older adults remain insufficiently characterized. In a nested case-control stu...