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Researchers have discovered through an Israeli study that a herpes infection could be triggered by Covid-19 vaccinations for certain patients with underlying conditions.
The study identified six individuals who developed a rash known as herpes zoster after receiving the Pfizer vaccine. Five developed the rash after their first dose of the vaccination, and the sixth developed it after the second dose.
Herpes zoster causes a red, itchy rash to develop on the skin and it could eventually lead to complications such as nerve damage.
The six who developed the herpes infection all had mild cases of autoimmune inflammatory rheumatic diseases and were below the age of 50.