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A reappraisal of the u.s. Clinical trials of post-treatment lyme disease syndrome.

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Four federally funded randomized placebo-controlled treatment trials of post-treatment
Lyme syndrome in the United States have been conducted. Most international treatment guidelines summarize these trials as having shown no acute or sustained benefit to repeated antibiotic therapy. The goal of this paper is to determine whether this summary con-clusion is supported by the evidence.


The methods and results of the 4 U.S. treatment trials are described and their critiques evaluated.


2 of the 4 U.S. treatment trials demonstrated efficacy of IV ceftriaxone on primary and/or secondary outcome measures.


Future treatment guidelines should clarify that efficacy of IV ceftriaxone for post-treatment
Lyme fatigue was demonstrated in one RCT and supported by a second RCT, but that its use was not recommended primarily due to adverse events stemming from the IV route of treatment. While repeated IV antibiotic therapy can be effective, safer modes of delivery are needed.

Open Neurol J. 2012;6:79-87. doi: 10.2174/1874205X01206010079. Epub 2012 Oct 5.

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