What is the etiology of chickenpox (varicella)?

Updated: Aug 31, 2020
  • Author: Anthony J Papadopoulos, MD; Chief Editor: Dirk M Elston, MD  more...
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Answer

Chickenpox is usually acquired by the inhalation of airborne respiratory droplets from a VZV-infected host. High viral titers are found in the characteristic vesicles of chickenpox; thus, viral transmission may also occur through direct contact with these vesicles.

Reactivation may occur with immunosuppression and during coronavirus disease 2019 (COVID-19) infection. Some varicelliform eruptions during COVID-19 are actually varicella. [3, 4, 5]

 


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