Small study (52 people) indicates that breakthrough COVID infections, not including omicron, in the fully vaccinated results in high levels of neutralizing antibodies.

Medical Mythbusting Commentary for December 21, 2021

[display_podcast]

Source:
Breakthrough infection could mean ‘end game’ for COVID

‘Super Immunity’ From Breakthrough Infection After Covid-19 Vaccination? Here’s What This Study Said

Reference:
Antibody Response and Variant Cross-Neutralization After SARS-CoV-2 Breakthrough Infection