Inclusion criteria for oncohematological patients  >/= 12 years of age. Prior diagnosis of oncohematological disease. The patient has signed an informed consent form. The patient was vaccinated with SARS-CoV-2 vaccine.  Inclusion criteria for healthy individuals  >/= 12 years of age. Patients without prior diagnosis of oncohematological disease. The patient has signed an informed consent form. The patient was vaccinated with SARS-CoV-2 vaccine.  Exclusion criteria No exclusion criteria will be applied.