COVID-19 Clinical Trial
Official title:
A National, Multicentric, Observational, Prospective Study to Assess Immune Response to COVID-19 Vaccine in Frail Patients (VAX4FRAIL).
This is a multicentre observational study with the aim of evaluating the antibody and cellular response after vaccination for SARS-CoV-2 with Pfizer-BioNTech or Moderna vaccines in frail subjects with impaired immuno-competence, due to their underlying diseases or ongoing therapies.
The immune response to COVID-19 vaccination will be assessed at the following time points: T0: the day of vaccination T1: the day of the booster dose according to the schedule of the two vaccines (Pfizer/BioNTech or Moderna) T2: between 5 and 7 weeks after T0 for those vaccinated with Pfizer/BioNTech and between 6 and 8 weeks after T0 for those vaccinated with Moderna. - T3: 12 (± 1) weeks after T0 - T4: 24 (± 2) weeks from T0 - T5: 52 (± 2) weeks from T0 Prevention of SARS-CoV-2 infection will be assessed in terms of incidence of SARS-CoV-2 infections (NF molecular swab positive), and of SARS-CoV-2 infections requiring hospitalisation. ;
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