Synergistic interactions between herpes simplex virus type-2 and human immunodeficiency virus epidemics

Area of Science:

• Virology
• Epidemiology
• Infectious Diseases

Background:

• Herpes simplex virus type 2 (HSV-2) transmission is influenced by factors like gender and sexual contact frequency.
• The link between HSV shedding and transmission is plausible but lacks robust supporting data.
• Current understanding of HSV shedding as a surrogate marker for transmission is limited.

Purpose of the Study:

• To examine the necessity of a surrogate marker for HSV-2 transmission.
• To evaluate evidence supporting viral shedding as a surrogate marker for HSV-2 transmission.
• To discuss critical parameters for using viral shedding in future clinical studies.

Main Methods:

• Review of existing data on HSV shedding and transmission.
• Expert discussion at the International Herpes Management Forum (IHMF) Annual Meeting (2004).
• Analysis of evidence from HSV and other viral infection studies.

Main Results:

• Few data currently support viral shedding as a reliable surrogate marker for HSV-2 transmission.
• Uncertainty exists regarding the critical parameters of viral load and shedding frequency for transmission reduction.
• The precise relationship between viral load and transmission requires further elucidation.

Conclusions:

• A surrogate marker for HSV-2 transmission is debated, with viral shedding lacking sufficient evidence for current use.
• Further research is needed to define the relationship between viral shedding parameters and transmission reduction.
• Clearer criteria are necessary before viral shedding can be validated as a surrogate marker in clinical studies.