Table 2 Syphilis screening strategies evaluated in the model
From: Screen more or screen more often? Using mathematical models to inform syphilis control strategies
Intervention | Description | Details |
|---|---|---|
(A) Base case | Screen every 12 months | • 20% of HIV-negative individuals screened |
• 50% of HIV-positive individuals screened | ||
• 60% of regular and 10% of casual partners of infectious index cases treated | ||
• 520 tests performed annually | ||
(B) Increase coverage of screening | Increase coverage by 10% | Same as (A), but: |
• 30% of HIV-negative individuals screened | ||
• 60% of HIV-positive individuals screened | ||
• 720 tests performed annually | ||
(C) Increase frequency of screening | Screen every 6 or every 3 months | Same as (A), but |
• Frequency of screening in population is increased to every 6 (1040 tests annually) or 3 (2080 tests annually) months* | ||
(D) Equivalent number of tests | Screen a proportion of the population every 12 months such that the total number tests performedis equivalent to (C) | To equal every 6 months: |
• 100% of HIV-positive individuals screened and 40% of HIV-negative individuals screened (1040 tests annually) | ||
To equal every 3 months: | ||
• 100% of the population screened (2000 tests annually)* |