Who, When and How this FDA authorized extra dose will work:
Who: Immunocompromised: These are the groups that have difficulties mounting a response to vaccines: Certain cancer chemotherapies (not all)-ask your oncologist, end stage liver disease, some kidney diseases with poor kidney function-ask your doctor, some medications for autoimmune diseases like rheumatoid arthritis or psoriatic arthritis-ask your doctor, HIV patients with low CD4 counts, in general over 65 but usually with several other medical conditions, other immune disease such as gamma globulin deficiency, people without spleens, and organ transplant recipients.
It is a good idea for people with a chronic lung disease to get a Covid-19 antibody test at 6 months after second Pfizer or Moderna shot or the JnJ vaccine to see if you need the late booster.
When: Most likely after 6 months after your second Pfizer or Moderna vaccine or the JnJ vaccine. Your doctor may want to do a Sars-CoV-2 blood antibody test before giving you this late booster.
How: If your physician doesn’t provide it, you may need a doctor’s order or proof of your condition. A doctor’s order will always work. More on the process at health department vaccine centers and pharmacies in the next week but they cannot refuse a doctor’s order.