On Jan. 19, 2021, the Northern Arizona University and TGen, an affiliate of City of Hope, announced results of a study that suggested the immune systems of people infected with COVID-19 may rely on antibodies created during infections from earlier coronaviruses to help fight the disease.

The study sought to understand how coronaviruses (CoVs) ignite the human immune system and conduct a deeper dive on the inner workings of the antibody response. The published findings appeared in the journal Cell Reports Medicine.