[Infections caused by human alpha herpes viruses]

Area of Science:

• Virology
• Immunology
• Infectious Diseases

Background:

• Varicella-zoster virus (VZV), herpes simplex virus 1 (HSV-1), and herpes simplex virus 2 (HSV-2) are human alpha-herpesviruses.
• Humans are the sole host and reservoir for these globally prevalent viruses.
• Following primary infection, these viruses establish lifelong latency, with potential for reactivation.

Purpose of the Study:

• To summarize the characteristics and clinical implications of VZV, HSV-1, and HSV-2 infections.
• To highlight the spectrum of diseases caused by these alpha-herpesviruses.
• To emphasize the risks associated with primary infection and reactivation, particularly in immunocompromised individuals.

Main Methods:

• Review of existing literature on VZV, HSV-1, and HSV-2.
• Analysis of disease spectrum and risk factors.
• Discussion of viral latency and reactivation mechanisms.

Main Results:

• Primary VZV, HSV-1, and HSV-2 infections are often asymptomatic in healthy children.
• Immunocompromised patients face a higher risk of severe disease and complications.
• Alpha-herpesvirus infections can lead to severe outcomes, including death, even in healthy individuals.

Conclusions:

• VZV, HSV-1, and HSV-2 infections pose significant health risks due to their lifelong persistence and potential for severe manifestations.
• Understanding viral latency and reactivation is crucial for managing these infections.
• Vigilance is necessary for both immunocompromised and healthy populations regarding alpha-herpesvirus infections.