Antibodies to SARS-CoV-2 remain stable, or even increase, seven months after infection

The levels of IgG antibodies against SARS-CoV-2 Spike protein remain stable, or even increase, seven months after infection, according to a follow-up study in a cohort of healthcare workers. The results also support the idea that pre-existing antibodies against common cold coronaviruses could protect against COVID-19.