Objective: To determine the cost and effectiveness of three approaches
to partner notification for infectious syphilis, Study Design: People
with syphilis were randomly assigned to: (1) notification of partners
by patients themselves within 2 days or disease intervention speciali
sts would notify them; (2) immediate notification by intervention spec
ialist; or (3) immediate notification by intervention specialists, who
had the option of drawing blood in the field, Costs of intervention s
pecialists' time, travel, and overhead were measured, Intention-to-tre
at analysis measured outcomes per randomized index patient, Results: F
rom December, 1990 through March, 1993, 1,966 index patients with syph
ilis (primary 9%; secondary 18%; and early latent 73%) were randomized
in Broward County (Ft, Lauderdale), Florida (1,191); Tampa, Florida (
569); and Paterson, New Jersey (206), Index patients reported 11,272 p
otentially exposed partners and sufficient information to initiate inv
estigations for 2,761, Of these, 2,236 were located, 367 had newly ide
ntified infections, and 870 others received preventive treatment, The
three partner notification approaches had similar success locating par
tners (1.1-1.2 per index patient) and treating partners (0.61-0.67 per
index), The cost was $317 to $362 per partner treated; the optimal st
rategy differed by study site, Conclusions: Partner notification ident
ified many infected and potentially infected people, The cost and effe
ctiveness of the three types of provider notification were similar. Al
ternative approaches are needed to reach infected partners who could n
ot be notified.