Post Covid-19 Injection Syndrome (pCoIS)


Post Covid-19 Injection Syndrome or pCoIS (also called Post Covid-19 Vaccine Syndrome or pCoVS) is a new complex multi-system inflammatory syndrome. A syndrome is a collection of symptoms that may differ from person to person. Emerging data show that pCoIS is similar to Long Covid or Chronic Fatigue Syndrome and manifests as a combination of the following symptoms:

    • muscle and joint pain
    • gastrointestinal upset
    • weakness
    • numbness and tingling in the extremities
    • intense fatigue
    • poor sleep
    • brain fog

Unlike Long Covid, pCoIS does not appear to necessarily progress from a Covid-19 like illness but may arise spontaneously weeks after a Covid-19 injection. As pCoIS is a new condition, we don’t know the long-term significance of the symptoms.



Eight categories of pCoIS disease

The World Council for Health experts currently recognises the following eight categories of pCoIS disease:


Categorization Description
Cardiac Complications (pCoIS-Car) For post-injection symptoms affecting the heart such as inflammation or myocarditis, heart attack, or heart failure
Neurological Complications (pCoIS-N) For post-injection symptoms affecting the brain and nervous system such as Guillain Barre Syndrome, encephalitis, Parkinson’s Disease, memory loss, and dementia
Haematological Complications (pCoIS-H) For post-injection symptoms affecting the blood cells such as blood clots, thrombocytopenia and lymphoma
Vascular Complications (pCoIS-V) For post-injection symptoms affecting blood vessels such as stroke, blood vessel thrombosis, and pulmonary embolism
Immune System Complications (CoIS-IS) For post injections symptoms affecting the immune system including autoimmune diseases (e.g. Diabetes Mellitus, Multiple Sclerosis and Chrohn’s Disease) and infections (e.g. Shingles, Herpes, Epstein Barr Virus)
Reproductive Health Complications (PCoIS-RH) For post-injection complications affecting pregnancy and the reproductive organs such as adverse pregnancy outcomes, heavy periods, post-menopausal bleeding, and infertility
Cancer Complications (PCoIS-Can) For post-injection appearance of cancers such as breast cancer, lymphoma, leukemia, and brain cancer
Congenital Complications (pCoIS-Con) For post-injection congenital complications such as diseases/abnormalities present from birth (e.g. bleeding and clotting abnormalities, deformities)





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