This is not specific to CLL or immune compromised, but may provide good background info for us Senior citizens:
healthguides.healthgrades.c...
SNIP: Staying up to date with vaccines and booster shots is crucially important for your health and the health of those around you. Dr. Donald Middleton shares what he wants older adults to know about immunizations to clarify vaccine recommendations.
1. Q: Why do older adults need to get repeat vaccinations that they received as children?
A: Vaccines are critical for protecting us against highly contagious and potentially fatal diseases. When you receive a vaccine as a child, you’re injected with a safe, altered form of the infecting agent so that your body’s immune system can learn how to fight the disease. Your immune system will develop proteins called antibodies to fight off invaders and keep you healthy. Should you come into contact with the disease after your vaccine, your immune system will know how to fight it. However, if you’re not re-exposed to the disease, over time the antibodies’ response becomes too weak to provide full protection. You can think of it like exercising; if you’re an avid cycler but stop training for a while, you’re not going to ride as well or as quickly as time goes by
Think you know everything about getting vaccinated? Learn more in this video.
Medical Reviewer: William C. Lloyd III, MD, FACS Last Review Date: May 8, 2018
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And here is an easy to read chart from the USA CDC ACIP:
cdc.gov/vaccines/schedules/...
Row 2 on page 2 applies to those of us with CLL.
Len