On 2017 Mar 15, Sin Hang Lee commented:
Correspondence submitted to Nat.Rev.Dis.Primers
In their recent Primer [Lyme borreliosis. Nat. Rev. Dis. Primers 2, 16091 (2016)] Allen Steere and colleagues described Lyme borreliosis as an important emerging infectious disease [1]. The authors assert that the natural history of untreated Lyme borreliosis can be divided into stages 1, 2 and 3, and that the early stage 1 infections can be treated successfully with a 10–14 day course of antibiotics. However, the authors also stated that demonstration of borrelial infection by laboratory testing is required for reliable diagnosis of Lyme borreliosis, with the exception of erythema migrans and that serodiagnostic tests are insensitive during the first several weeks of infection. If not treated early, “within days to weeks, the strains of B. burgdorferi in the United States commonly disseminate from the site of the tick bite to other regions of the body”. In other words, the authors have affirmed that if reliably diagnosed at the early stage of the infection, Lyme borreliosis can be cured with timely, appropriate antibiotics to prevent deep tissue damage along with its associated clinical manifestations resulting from host immune response to various spirochetal products or components. In the Outlook Diagnostic tests section of the article, the authors failed to mention the fact that currently the diagnosis of emerging infectious diseases largely depends on finding evidence of the causative agent in the host by nucleic acid-based tests [2], not serodiagnostic tests which usually turn positive only during convalescence. The authors seem to advise the medical practitioners to not treat Lyme disease patients until the proliferating spirochetes in the host have elicited certain immune responses which can be confirmed by serologic tests. Such practice should not be accepted or continued for obvious reasons.
The authors stated “After being deposited in the skin, B. burgdorferi usually multiplies locally before spreading through tissues and into the blood or lymphatic system, which facilitates migration to distant sites.”. This statement acknowledges that spirochetemia is an early phase in the pathogenesis of Lyme borreliosis. But under the section of Diagnostic tests, polymerase chain reaction (PCR) test was only mentioned for synovial fluid of patients in late Lyme arthritis and for cerebrospinal fluid (CSF) of late neuroborreliosis. To refute the usefulness of DNA test for Lyme disease diagnosis, the authors cited a study which showed borrelial DNA was detected in synovial fluid of Lyme arthritis patients containing moribund or dead spirochetes [3]. However, the authors failed to discuss the significance of detection of borrelial DNA in the diagnosis of spirochetemia. The authors failed to acknowledge that even the finding of moribund or dead borrelial cells circulating in the blood is diagnostic of an active infection. Free foreign DNA is degraded and eliminated from the mammalian host’s blood within 48 hours [4]. Detection of any borrelial DNA validated by DNA sequencing is indicative of a recent presence of spirochetes, dead or alive, in the circulating blood which is evidence of an active infection beyond a reasonable doubt.
It seems unfortunate for many current Lyme disease patients that Lyme arthritis was described before the era of Sanger sequencing and PCR [5]. If Lyme borreliosis were discovered as an emerging infectious disease today, Lyme disease would probably be routinely diagnosed using a highly accurate nucleic acid amplification test, as reiterated by Dr. Tom Frieden, director of the Centers for Disease Control and Prevention (CDC) for Zika virus infection [6], or by the European Centre for Disease Prevention and Control for the case definition of Ebola virus infection [7]. Now there is evidence that clinical “Lyme disease” in the United States may be caused by B. miyamotoi [8-10], co-infection of B. burgdorferi and B. miyamotoi [9], a novel CDC strain (GenBank ID# KM052618) of unnamed borrelia [10], and a novel strain of B. burgdorferi with two homeologous 16S rRNA genes [11]. The Lyme disease patients infected with these less common strains of borreliae may have negative or non-diagnostic two-tiered serology test results. Neither erythema migrans nor serologic test is reliable for the diagnosis of Lyme disease. In one summer, the emergency room of a small hospital in Connecticut saw 7 DNA sequencing-proven B. burgdorferi spirochetemic patients. Only three of them (3/7) had a skin lesion and only one (1/7) had a positive two-tiered serologic Lyme test [12].
After a 40-year delay, the medical establishment should begin to diagnose “Lyme disease” as an emerging infectious disease by implementing nucleic acid-based diagnostic tests in the Lyme disease-endemic areas. A national proficiency test program to survey the competency of diagnostic laboratories in detecting various pathogenic borrelia species is urgently needed for stimulating diagnostic innovation. We should treat the borrelial infection of “Lyme disease” to reduce its autoimmune consequences, just like treating streptococcal infection early to reduce the incidence of rheumatic heart disease in the past.
Allen Steere and colleagues have written a prescription to treat Lyme borreliosis in their lengthy article raising numerous questions [1], but paid little attention to the issue of how to select the patients at the right time for the most effective treatment. For the physicians managing current and future Lyme disease patients, a sensitive and no-false positive molecular diagnostic test is a priority, also the most important issue for the patients that Allen Steere and his colleagues have simply glossed over.
Conflict of Interest: Sin Hang Lee is the director of Milford Molecular Diagnostics Laboratory specialized in developing DNA sequencing-based diagnostic tests for community hospital laboratories.
References 1. Steere, A.C. et al. Lyme borreliosis. Nat. Rev. Dis. Primers 2,16091 (2016). 2. Olano, J.P. & Walker, D.H. Diagnosing emerging and reemerging infectious diseases: the pivotal role of the pathologist. Arch. Pathol. Lab. Med. 135, 83-91 (2011). 3. Li, X. et al. Burden and viability of Borrelia burgdorferi in skin and joints of patients with erythema migrans or Lyme arthritis. Arthritis Rheum. 63, 2238–2247 (2011). 4. Schubbert, R. et al. Foreign (M13) DNA ingested by mice reaches peripheral leukocytes, spleen, and liver via the intestinal wall mucosa and can be covalently linked to mouse DNA. Proc. Natl. Acad. Sci. U. S. A. 94, 961-966 (1997). 5. Steere, A. C. et al. Lyme arthritis: an epidemic of oligoarticular arthritis in children and adults in three connecticut communities. Arthritis Rheum. 20, 7–17 (1977). 6. Frieden T. Transcript for CDC Telebriefing: Zika Update. https://www.cdc.gov/media/releases/2016/t0617-zika.html (2016) 7. ECDC. Ebola virus disease case definition for reporting in EU. http://ecdc.europa.eu/en/healthtopics/ebola_marburg_fevers/EVDcasedefinition/Pages/default.aspx#sthash.LvKojQGu.wf5kwZDT.dpuf (2016 last accessed) 8. Jobe, D.A. et al. Borrelia miyamotoi Infection in Patients from Upper Midwestern United States, 2014-2015. Emerg. Infect. Dis. 22, 1471-1473 (2016). 9. Lee, S.H. et al. Detection of borreliae in archived sera from patients with clinically suspect Lyme disease. Int. J. Mol. Sci. 15, 4284-4298 (2014). 10. Lee, S.H. et al. DNA sequencing diagnosis of off-season spirochetemia with low bacterial density in Borrelia burgdorferi and Borrelia miyamotoi infections. Int. J. Mol. Sci. 15, 11364-11386 (2014). 11. Lee, S.H. Lyme disease caused by Borrelia burgdorferi with two homeologous 16S rRNA genes: a case report. Int. Med. Case Rep. J. 9,101-106 (2016). 12. Lee, S.H. et al. Early Lyme disease with spirochetemia - diagnosed by DNA sequencing. BMC Res. Notes. 3, 273 (2010).
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