ID restricted with following criteria restriction:
- Age ≥ 65 years, and/or
- Immunocompromised, defined as:
- Malignancy
- HIV/AIDS with CD4 count ≤ 200 cells/mm³ (or ≤ 14%)
- Receiving immunosuppressive therapy or steroids ≥ prednisone 20 mg/day (or equivalent)
- Solid organ/stem cell transplant recipient