Lymphocyte-associated viremia in varicella

Area of Science:

• Virology
• Immunology
• Pediatrics

Background:

• Varicella-zoster virus (VZV) causes chickenpox, a common childhood illness.
• Understanding VZV's behavior during infection is crucial for disease management.

Purpose of the Study:

• To investigate the presence and cellular association of VZV during the incubation and acute phases of varicella in immunocompetent children.

Main Methods:

• Isolation of VZV from mononuclear cells of seven immunocompetent children.
• Characterization of virus-isolating cells based on adherence and phagocytic properties.
• Timing of sample collection: late incubation and acute phases of varicella.

Main Results:

• VZV was successfully isolated from mononuclear cells during both late incubation and acute phases of varicella.
• The cells involved in VZV isolation were identified as nonphagocytic lymphocytes.
• These lymphocytes did not adhere to standard cell culture plates.

Conclusions:

• The findings suggest lymphocyte-associated viremia occurs during the onset of varicella.
• This highlights the role of lymphocytes in VZV dissemination and pathogenesis.