2019-20 coronavirus outbreak

Adverse effect

Virology

Immunity

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)

Outbreak

Coronavirus disease 2019 (COVID-19)

Immunology

Pediatrics

Immune system

Vaccination

Infectious disease (medical specialty)

Internal medicine

Medicine

Varicella zoster virus

Virus

Pandemic

Disease

Vaccines

Seven immunocompetent patients aged &gt; 50 years old presented with herpes zoster (HZ) infection in a median of 9 days (range 7–20) after vaccination against SARS-CoV-2. The occurrence of HZ within the time window 1–21 days after vaccination defined for increased risk and the reported T cell-mediated immunity involvement suggest that COVID-19 vaccination is a probable cause of HZ. These cases support the importance of continuing assessment of vaccine safety during the ongoing massive vaccination for the COVID-19 pandemic and encourage reporting and communication of any vaccination-associated adverse event.

Reactivation of Varicella Zoster Virus after Vaccination for SARS-CoV-2