An Epidemiological Study to Investigate the Characteristics of RSV Infection in Adult Hematopoietic Cell Transplant Recipients or Hematological Malignancies Patients in Tianjin HI (Hematology Institute)

Inclusion Criteria

• •1\) Aged ≥ 18 years old. 2) Receiving hematopoietic stem cell transplantation; OR being diagnosed with hematological malignancies (including but not limited to leukemia, lymphoma, and multiple myeloma) and receiving chemotherapy.
• •3\) New onset of respiratory symptoms; OR exacerbation of existing chronic respiratory symptoms (such as previously diagnosed chronic runny nose, seasonal allergies, chronic lung disease, etc.).
• •4\) Willing to sign an informed consent form, able to understand and willing to follow the study protocol.