Anti-SARS-CoV-2 nucleocapsid antibodies to detect exposure to SARS-CoV-2 : results from a prospective cohort study on COVID-19 vaccination
BACKGROUND: In May 2023, the World Health Organization declared COVID-19 no longer a public health emergency. Despite successful vaccination campaigns, vaccines provide limited protection against transmission. Since general testing has been abandoned in most countries, alternative population surveillance methods to assess SARS-CoV-2 exposure are needed.METHODS: N-antigen is a protein of the SARS-C
