You’re correct, @pmm. Our bone marrow is the heart of our immune system…the blood cell manufacturing site. With any blood cancer our immune system has been compromised, it’s not as robust, so it puts us at a higher risk for all infections and illnesses. Covid being one of them because it’s so new. We just statically don’t have enough info on what it does to our bodies and how well the vaccinations have set up our weakened immune systems to respond when we’re exposed.

Fortunately MGUS is generally slow to develop but it’s always good to take those extra precautions to avoid Covid. That one is still so unpredictable in any setting.