Letter to the Editor
The return of Koch's: Ineffective treatment or re-infection
El regreso de Koch: tratamiento ineficaz o reinfección
Amos Lala,
, Ajay Kumar Mishraa, Kamal Kant Sahua, George M. Abrahamb,c,d,e,f,g
Corresponding author
a Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA, USA
b Department of Medicine, Saint Vincent Hospital, USA
c University of Massachusetts Medical School, USA
d American College of Physicians (ACP), USA
e Board of Governors (ACP), USA
f Infectious Disease Board, American Board of Internal Medicine (ABIM), USA
g Board of Registration in Medicine (BORIM), Commonwealth of Massachusetts, Worcester, MA, USA
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Abraham" "autores" => array:4 [ 0 => array:4 [ "nombre" => "Amos" "apellidos" => "Lal" "email" => array:2 [ 0 => "manavamos@gmail.com" 1 => "Amos.Lal@stvincenthospital.com" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] 1 => array:2 [ "etiqueta" => "*" "identificador" => "cor0005" ] ] ] 1 => array:3 [ "nombre" => "Ajay Kumar" "apellidos" => "Mishra" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] 2 => array:3 [ "nombre" => "Kamal Kant" "apellidos" => "Sahu" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] 3 => array:3 [ "nombre" => "George M." "apellidos" => "Abraham" "referencia" => array:6 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">c</span>" "identificador" => "aff0015" ] 2 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">d</span>" "identificador" => "aff0020" ] 3 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">e</span>" "identificador" => "aff0025" ] 4 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">f</span>" "identificador" => "aff0030" ] 5 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">g</span>" "identificador" => "aff0035" ] ] ] ] "afiliaciones" => array:7 [ 0 => array:3 [ "entidad" => "Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA, USA" "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:3 [ "entidad" => "Department of Medicine, Saint Vincent Hospital, USA" "etiqueta" => "b" "identificador" => "aff0010" ] 2 => array:3 [ "entidad" => "University of Massachusetts Medical School, USA" "etiqueta" => "c" "identificador" => "aff0015" ] 3 => array:3 [ "entidad" => "American College of Physicians (ACP), USA" "etiqueta" => "d" "identificador" => "aff0020" ] 4 => array:3 [ "entidad" => "Board of Governors (ACP), USA" "etiqueta" => "e" "identificador" => "aff0025" ] 5 => array:3 [ "entidad" => "Infectious Disease Board, American Board of Internal Medicine (ABIM), USA" "etiqueta" => "f" "identificador" => "aff0030" ] 6 => array:3 [ "entidad" => "Board of Registration in Medicine (BORIM), Commonwealth of Massachusetts, Worcester, MA, USA" "etiqueta" => "g" "identificador" => "aff0035" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "El regreso de Koch: tratamiento ineficaz o reinfección" ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Fig. 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1677 "Ancho" => 2507 "Tamanyo" => 413165 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">(A) Chest X-ray PA film showing right upper lobe cavitary lesion (green arrow). (B) Chest X-ray lateral film showing right upper lobe cavitary lesion (green arrow). (C) CT chest coronal view showing right upper lobe cavitary lesion (green arrow). (D) CT chest axial view showing right upper lobe cavitary lesion (green arrow). (E) Chest X-ray PA film showing right upper lobe scarring in area of previous cavitary lesion (red arrow). (F) Chest X-ray lateral film showing right upper lobe scarring in area of previous cavitary lesion (red arrow).</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">We read with great pleasure the article by Godoy et al. in your esteemed journal regarding surveillance of tuberculosis contacts and treatment strategies.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">1</span></a> We wish to compliment the article by extending the spectrum of disease for reader with an interesting case of treatment failure for latent tuberculosis and conversion to active disease. A 24-year-old asymptomatic male was seen in outpatient TB clinic after being sent from Department of Public health for positive Tuberculosis (TB) skin test (TST). He had recently migrated from China for university education in the US. He denied any past history of TB or close family members being treated for the same in recent past. As a part of immigration work up, he underwent TST which was positive (22<span class="elsevierStyleHsp" style=""></span>mm of induration). QuantiFERON®-TB Gold (QIAGEN, Hilden, Germany) test was also positive. Chest X ray done at the time to rule out active TB was normal. Patient was initiated on Rifampin as treatment of latent TB infection (LTBI) after explaining the risks and benefits. He completed his 4 month regimen for LTBI uneventfully. Patient remained in the US after his treatment of LTBI. Nine months after completion of his treatment for LTBI, patient presented to the clinic with episodes of cough and hemoptysis, he also complained of upper back pain. Clinical examination revealed tympanic note on percussion of right supraclavicular region and cavernous breath sounds in the same region. Laboratory work up revealed normal blood counts and chemistry, HIV and hepatitis screen was found to be normal as well. Chest X ray done at this time showed right upper lobe cavitary lesion (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>A and B), computed tomography (CT) of the chest showed 2<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>3<span class="elsevierStyleHsp" style=""></span>cm cavitary lesion in the right upper lobe (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>C and D). Induced sputum studies were positive for acid fast bacilli (AFB), 3 out of 3. Nucleic acid amplification testing (NAAT) for mycobacterium was positive for <span class="elsevierStyleItalic">Mycobacterium tuberculosis</span>. State lab TB polymerase chain reaction (PCR) test was negative for rifampin resistance. He was initiated on intensive phase of RIPE (Rifampin, Isoniazid, Pyrazinamide and Ethambutol) anti-tubercular regimen, at the end of 2 months he was found to be culture negative. Subsequently his treatment was changed to Isoniazid and Rifampin for 4 months to complete total of 6 months. His chest X-ray repeated at the end of treatment showed resolution of cavitary lesion with residual scarring (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>E and F).</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0010" class="elsevierStylePara elsevierViewall">Lifetime risk of developing active disease from latent TB ranges from 5% to 15%.<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">2</span></a> However, which latent TB case will transform into active disease remains an enigma. Centers for Disease Control (CDC) gives clear recommendations for treatment of latent as well as active TB infection.<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">2</span></a> There is paucity of published literature where patient develops active TB after successful completion of treatment latent TB such as this. Our patient did not travel to any TB endemic region after his initial treatment and remained immunocompetent. Recent article by Jain et al. raised some reasonable doubts about our current understanding and recommendations for treatment of latent TB testing and treatment, especially in the group of patients presenting from the developing world and high risk population.<a class="elsevierStyleCrossRefs" href="#bib0025"><span class="elsevierStyleSup">1,3,4</span></a> There have been no randomized controlled trials to assess the efficacy of latent TB treatment, comparing patients who receive treatment versus the ones that do not, also there are no head to head comparisons equating various treatment regimens.</p><p id="par0015" class="elsevierStylePara elsevierViewall">Cases such as ours raise many questions. Whether the initial treatment for latent TB was effective? Plausible explanations may include a re-infection (despite staying in the US; low TB prevalence region) or resistance to rifampin during his initial treatment (no rifampin resistance on TB PCR). Both the explanations are possible but seem unlikely. Development of active TB after treatment of latent TB is possible but not well reported. Treating clinicians should maintain a high index of suspicion. Drug resistance should also be tested in cases of recurrence. Bigger question of how effective our current testing for latent TB and subsequent treatment is; remains open ended and unanswered.</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflict of interests</span><p id="par0020" class="elsevierStylePara elsevierViewall">None.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:2 [ 0 => array:2 [ "identificador" => "sec0005" "titulo" => "Conflict of interests" ] 1 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "multimedia" => array:1 [ 0 => array:7 [ "identificador" => "fig0005" "etiqueta" => "Fig. 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1677 "Ancho" => 2507 "Tamanyo" => 413165 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">(A) Chest X-ray PA film showing right upper lobe cavitary lesion (green arrow). (B) Chest X-ray lateral film showing right upper lobe cavitary lesion (green arrow). (C) CT chest coronal view showing right upper lobe cavitary lesion (green arrow). (D) CT chest axial view showing right upper lobe cavitary lesion (green arrow). (E) Chest X-ray PA film showing right upper lobe scarring in area of previous cavitary lesion (red arrow). (F) Chest X-ray lateral film showing right upper lobe scarring in area of previous cavitary lesion (red arrow).</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0015" "bibliografiaReferencia" => array:4 [ 0 => array:3 [ "identificador" => "bib0025" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Surveillance of tuberculosis contacts: how can the strategy be improved?" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:2 [ 0 => "P. Godoy" 1 => "M. Alseda" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:2 [ "tituloSerie" => "Enferm Infecc Microbiol Clin" "fecha" => "2019" ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib0030" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Latent tuberculosis infection, treatment initiation and completion rates in persons seeking immigration and healthcare workers" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:3 [ 0 => "A. Lal" 1 => "A. Al Hammadi" 2 => "A. Rapose" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1016/0002-9343(82)90059-6" "Revista" => array:3 [ "tituloSerie" => "Am J Med" "fecha" => "2019" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/7102710" "web" => "Medline" ] ] ] ] ] ] ] ] 2 => array:3 [ "identificador" => "bib0035" "etiqueta" => "3" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Management of latent tuberculosis infection in children from developing countries" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:2 [ 0 => "A. Jain" 1 => "R. Lodha" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:2 [ "tituloSerie" => "Indian J Pediatr" "fecha" => "2019" ] ] ] ] ] ] 3 => array:3 [ "identificador" => "bib0040" "etiqueta" => "4" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Testing healthcare workers for latent tuberculosis: is it evidence based, bio-plausible, both, or neither?" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:2 [ 0 => "J. Gill" 1 => "V. Prasad" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1016/0002-9343(82)90059-6" "Revista" => array:3 [ "tituloSerie" => "Am J Med" "fecha" => "2019" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/7102710" "web" => "Medline" ] ] ] ] ] ] ] ] ] ] ] ] ] "idiomaDefecto" => "en" "url" => "/2529993X/0000003800000003/v1_202003050625/S2529993X20300393/v1_202003050625/en/main.assets" "Apartado" => array:4 [ "identificador" => "66012" "tipo" => "SECCION" "en" => array:2 [ "titulo" => "Letters to the Editor" "idiomaDefecto" => true ] "idiomaDefecto" => "en" ] "PDF" => "https://static.elsevier.es/multimedia/2529993X/0000003800000003/v1_202003050625/S2529993X20300393/v1_202003050625/en/main.pdf?idApp=UINPBA00004N&text.app=https://www.elsevier.es/" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2529993X20300393?idApp=UINPBA00004N" ]
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