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We’ve had chronic fatigue syndrome (ME/CFS) moments and long COVID moments, and now we have our first post-infectious disease moment. “Moments” are indications that something significant has happened which suggests that better times are ahead. In this case, not just for ME/CFS or long COVID but for post-infectious diseases in general.

The CDC’s ME/CFS Program is Back!

This moment was generated by the Centers for Disease Control’s ME/CFS program which is on a bit of a roll right now. (This is its second “moment” in the past year.) The program seemed to hibernate for a while. The CDC, it turned out, was working on its Multisite Clinical Assessment of ME/CFS (MCAM) project.

Network

The studies large network of patients and providers enhanced its robustness.

The CDC bit off a lot to chew with its Multisite project. It was one of four major, highly ambitious, and expensive projects (OMF’s Severely Ill Data project, the NIH’s Intramural study, and the Decode ME project) that took root in ME/CFS over the past ten years or so. The Multisite project has nearly been forgotten, but it involved intensely studying large numbers of ME/CFS patients as they saw a broad array of ME/CFS experts spread across the U.S.

Over the past couple of years, the publications have started to come out. There was a big exercise study suggesting that metabolic problems at the cellular level were causing strange breathing patterns.

Plus, the CDC produced a paper that greatly increased the prevalence of ME/CFS. While the CDC has rarely been a huge driver of ME/CFS research, it’s played a vital role in understanding ME/CFS prevalence and its impact. With the recent publications of several significant papers, you might say the CDC’s ME/CFS program is back.

Is ME/CFS Everywhere?

Elizabeth Unger CDC CFS Chief

Dr. Unger moved quickly to compare the effects common pathogens and the coronavirus had on coming down with ME/CFS.

What a clever study. Then again, the “Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After SARS-CoV-2 Infection” study is right in the Centers for Disease Control’s (CDC’s) wheelhouse. The CDC, after all, is all about tracking disease. It started out as the “Communicable Disease Center“, tracking the spread of malaria in the southern U.S., and then moved on to other infectious diseases.

Now, fittingly, in the 21st century, it’s tracking post-infectious diseases. Elizabeth Unger and company (this study included researchers from UCLA, Yale, UCSF, University of Wash., University of Texas, etc.) were way ahead of the game when, back in 2020, they began assessing how often infections other than the coronavirus were causing chronic fatigue syndrome (ME/CFS).

The study was brilliantly simple. Between Dec. 2020 and Sep. 2022, it enrolled over 4,000 people with an acute infectious illness in sites scattered across the U.S. and, using tests approved by the FDA, determined if they had COVID-19.

Then they standardized questionnaires including the 2015 Institute of Medicine criteria to determine their symptoms and if they met the criteria for ME/CFS at 3, 6, 9, and 12 months. In the end, they had a post-infectious coronavirus group and a post-infectious other-pathogen group.

Results

“Our findings suggest that COVID-19 is no more likely than other acute infections to be associated with ME/CFS.”  The authors.

Maybe nobody but an ME/CFS patient could have expected the results. The big bad coronavirus was no more likely to produce ME/CFS than the mystery pathogen – essentially suggesting that the common cold is every bit as effective at producing ME/CFS as the coronavirus. If anything, the people infected with the mystery pathogen might have fared worse.

Interestingly, the percentage of people remaining ill stayed pretty constant over 12 months (@2.6-3.6%); i.e. they were not getting better.

“The high symptom burden for participants meeting ME/CFS criteria persisted through 12 months in both cohorts, emphasizing the potential for a long duration of illness and disability.”

The study’s findings were strengthened by its size and its spread across 8 geographic areas. Not surprisingly, it made it into a top-notch journal – the

You can see how these people could have been missed. The common cold (which is caused by a variety of pathogens) doesn’t get much study – most people simply get over it – and only a very small percentage of people remain ill. The problem only gets significant when you add in all the people who get colds every year. It’s exactly the kind of thing our big disease-focused medical establishment would miss. We needed a new pathogen to sweep the field to highlight the post-infectious subset.

What a turnaround for the medical establishment this is. Many people with ME/CFS know how hard it’s been to convince doctors that a simple cold could result in a disabling disease. It just didn’t compute.

new approach

New large studies are forcing the medical profession to focus on post-infectious diseases.

The Multisite study isn’t the first to find that common infections can cause disabling symptoms. A larger (10,000 person) UK study published in Lancet, which followed people for a shorter period (1 month), found that people with undiagnosed respiratory infections had similarly high symptom burdens, and concluded that there “may be long-lasting health impacts from other respiratory infections that are going unrecognised”, and that “we must take the opportunity to investigate and consider the post-acute burden of other ARIs, to ensure all people with post-acute sequelae can access the treatment and care they deserve.”

Another confirmatory finding came from a 17-year 2023 Taiwanese study, which found that people infected with Varicella-zoster virus, mycobacterium tuberculosisEscherichia coliCandidaSalmonellaStaphylococcus aureus and influenza all had an increased risk of coming down with ME/CFS.

Most of these are “common pathogens” that most people quickly fight off. Varicella zoster causes chickenpox, E. coli and salmonella are common causes of diarrhrea, candida is a common fungus, Staphylococcus aureus causes sinusitis.

From the groundbreaking Dubbo studies of the 1990s to the more recent fibromyalgia giardia studies, there’s ample evidence that common infections can cause an ME/CFS-like illness. Aside from Lenny Jason’s infectious mononucleosis college studies, the studies have been quite small and made little impact outside the field.

wave

A wave of support for post-infectious diseases is building

A Building Wave

Things are different now. Large studies that are getting published in prominent medical journals are making it impossible for the medical profession to ignore post-infectious illnesses. Ditto with a recent CDC study which found that ME/CFS is much more common than previously thought.

Post-infectious disease communities are uniting and demanding their illnesses be given equal footing.
The $10 billion / 10-year Long COVID Moonshot to vastly increase funding for long COVID, ME/CFS, POTS, and post-Lyme Disease Syndrome is the most prominent example of this – you can support that effort now. The fight for post-infectious disease Center at the NIH suggests that a new era is coming.

The wave is building. Post-infectious diseases can be ignored no longer.

Another “ME/CFS Moment”! ME/CFS is Much More Common than Thought, Says CDC

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