Strong Country Level Correlation between Syphilis and HSV-2 Prevalence

Area of Science:

• Epidemiology
• Public Health
• Infectious Diseases

Background:

• Syphilis is curable, while Herpes Simplex Virus-2 (HSV-2) is not.
• National STI screening and treatment capacity may affect syphilis prevalence differently than HSV-2.
• Investigating the correlation between syphilis and HSV-2 prevalence can elucidate underlying risk factors.

Purpose of the Study:

• To evaluate the relationship between national antenatal syphilis prevalence and HSV-2 prevalence in women.
• To determine if this correlation holds across different time periods and age groups.

Main Methods:

• Simple linear regression analysis was employed.
• Data from two time periods (1990-1999 and 2008) were analyzed.
• Adjustments were made for syphilis testing algorithms and circumcision prevalence.

Main Results:

• A positive correlation was observed between syphilis and HSV-2 prevalence in both analyzed time periods.
• This correlation was statistically significant across different age groups (20-24 and 40-44 years old).
• Adjusted correlations indicated a robust association (R² values ranging from 0.41 to 0.54).

Conclusions:

• The prevalence of syphilis and HSV-2 is positively correlated.
• This association suggests that a common set of risk factors may underlie the prevalence of both STIs.
• Findings imply that factors beyond differential treatment efficacy contribute to variations in STI prevalence.