Zone1 I had MS when I was 38 years old.

[easyt65]

However, that’s not the case for a small percentage of individuals with multiple sclerosis (MS). The JC virus can be activated when a person’s immune system is compromised because of disease or immunosuppressive medication.

The virus can then be carried into the brain. It infects the white matter of the brain and attacks the cells responsible for making myelin, the protective coating that covers and protects nerve cells. This infection is called progressive multifocal leukoencephalopathy (PML). PML can be disabling, even fatal.

Understanding the JC Virus and the Risks for People with MS

Learn how the extremely common and normally harmless JC virus may put certain people with multiple sclerosis at risk for complications.

www.healthline.com

and here

What Is the JC Virus?

WebMD tells you what you need to know about the JC virus, the germ that causes the rare but deadly brain infection known as PML.

www.webmd.com

sounds horrible.

• Clumsiness
• Progressive weakness
• Visual, speech, and sometimes personality changes

Progressive Multifocal Leukoencephalopathy

Progressive multifocal leukoencephalopathy (PML) is a disease of the white matter of the brain, caused by a virus infection (polyomavirus JC) that targets cells that make myelin—the material that insulates nerve cells (neurons). Polyomavirus JC (often called JC virus) is carried by a majority of...

www.ninds.nih.gov

I'm always looking up for diseases, a lot of people are worse than me.

My immune system pretty much bottomed out due to my MS, long haul COVID, and immunosuppressive medication, activating my JCV.