Neutralizing Power of Serum Antibodies - 2

Study of the Neutralizing Power of Serum Antibodies - 2 (PNAS-2)

Severe forms of COVID-19 and Monkeypox affect immunocompromised and comorbid individuals. Vaccination and monoclonal antibody therapies induce neutralizing antibodies. This neutralizing power is recognized as a correlate of protection against a new infection. This study aims to describe the neutralizing power of serum and nasal antibodies over time, in relation to SARS-CoV-2 and MPXV vaccines or treatments received.

This is a monocentric, longitudinal, descriptive study aiming to measure and describe the evolution of the humoral immune response (serum and nasal) to SARS-CoV-2 and MPXV, following any vaccination or administration of monoclonal antibodies. Samples are collected over a maximum 60-month period per participant to assess the durability of neutralizing activity.

Inclusion Criteria:

• Adults (≥18 years)
• Patients receiving or scheduled to receive anti-SARS-CoV-2 and/or anti-MPXV vaccines or monoclonal antibodies
• Patients have provided written informed consent

Exclusion Criteria:

• Persons under guardianship or curatorship
• Persons under legal protection,
• Persons persons deprived of liberty
• Persons not affiliated to a social security scheme
• Pregnant or breastfeeding women