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"apellidos" => "Andreu Vazquez" ] ] ] ] ] "idiomaDefecto" => "es" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2603647920301354?idApp=UINPBA00004N" "url" => "/26036479/0000003600000003/v2_202112080612/S2603647920301354/v2_202112080612/es/main.assets" ] "en" => array:13 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Letter to the Editor</span>" "titulo" => "Is it time to truncate the trusted ‘3-T Strategy’" "tieneTextoCompleto" => true "saludo" => "Dear Editor," "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "178" "paginaFinal" => "179" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "K.V. Acharya, B. Unnikrishnan" "autores" => array:2 [ 0 => array:4 [ "nombre" => "K.V." "apellidos" => "Acharya" "email" => array:1 [ 0 => "vishak.acharya@manipal.edu" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor0005" ] ] ] 1 => array:3 [ "nombre" => "B." "apellidos" => "Unnikrishnan" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] ] ] ] "afiliaciones" => array:2 [ 0 => array:3 [ "entidad" => "Professor, Department of Pulmonary Medicine, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, India" "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:3 [ "entidad" => "Professor, Department of Community & Preventive Medicine, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, India" "etiqueta" => "b" "identificador" => "aff0010" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "¿Ha llegado el momento de truncar la prestigiosa “estrategia de las 3 T”?" ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">COVID-19 as a disease has two extreme spectrums. A major part of the disease burden is by the asymptomatic group (85%) majority of whom remain disease free when followed over a period of 3–4 weeks. The remaining 15% are the symptomatic group who are likely to progress and account for mortality and hospitalization. The medical community is caught in the midst of a raging debate on which section of this spectrum to focus on more diligently for better outcomes.</p><p id="par0010" class="elsevierStylePara elsevierViewall">Undiluted thrust by the healthcare on monitoring and timely treatment of the symptomatic group is very likely to reduce mortality. However, symptom-based screening alone fails to detect a high proportion of infectious cases and leads to poor control of transmission. So an approach to include asymptomatic persons could result in better outcomes.<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">1</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">In such a context South Korea tested an innovative strategy with great degree of success. The ‘3-T Strategy’ approach involved robust testing, extensive tracking and treating of COVID with mainstay of focus on asymptomatic COVID cases. This as a model has been replicated by many countries with India being one of them with varying degrees of success and setbacks.</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">When is the ‘3-T Strategy’ likely to work?</span><p id="par0020" class="elsevierStylePara elsevierViewall"><ul class="elsevierStyleList" id="lis0005"><li class="elsevierStyleListItem" id="lsti0005"><span class="elsevierStyleLabel">•</span><p id="par0025" class="elsevierStylePara elsevierViewall">In countries with either less population density, where-in the health system is well equipped to cope up with epidemic spurts in terms of health resources & infrastructure.</p></li><li class="elsevierStyleListItem" id="lsti0010"><span class="elsevierStyleLabel">•</span><p id="par0030" class="elsevierStylePara elsevierViewall">When the prevalence of the pandemic is still not critical and not yet breaching the local cluster transmission phase.</p></li><li class="elsevierStyleListItem" id="lsti0015"><span class="elsevierStyleLabel">•</span><p id="par0035" class="elsevierStylePara elsevierViewall">There is availability of unhindered resources to carry out RT-PCR tests universally during the specified time period whenever there is epidemiological alert of breakout of cases in the community.</p></li><li class="elsevierStyleListItem" id="lsti0020"><span class="elsevierStyleLabel">•</span><p id="par0040" class="elsevierStylePara elsevierViewall">When the health system can provide for stringent quarantine facilities for all asymptomatic positives, contacts and suspects. If the quarantine is non-institutional, a fool-proof technological surveillance system needs to be in place to ensure there is minimal community spread.</p></li><li class="elsevierStyleListItem" id="lsti0025"><span class="elsevierStyleLabel">•</span><p id="par0045" class="elsevierStylePara elsevierViewall">For this strategy to work three core competencies: digital technology, efficient health governance, and civic partnership are critical. In developing countries ensuring these three factors will be the critical components for optimal outcome.</p></li></ul></p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Emerging pitfalls with the ‘3-T Strategy’</span><p id="par0050" class="elsevierStylePara elsevierViewall"><ul class="elsevierStyleList" id="lis0010"><li class="elsevierStyleListItem" id="lsti0030"><span class="elsevierStyleLabel">•</span><p id="par0055" class="elsevierStylePara elsevierViewall">This strategy worked wonderfully well in South Korea as there was an extremely well thought out, coordinated and meticulously executed programme backed by universal free testing, reliable technological surveillance ensuring stringent quarantine measures. In India as the infection rates surged, the policies of institutional quarantine of the suspect contacts and asymptomatic was abandoned in a phased manner. Somewhere in the course of this battle rigorous and meticulous contact tracing and quarantines of suspects and asymptomatic COVID has been compromised too to a large extent.</p></li><li class="elsevierStyleListItem" id="lsti0035"><span class="elsevierStyleLabel">•</span><p id="par0060" class="elsevierStylePara elsevierViewall">Systematic review has shown that one time screening of healthy people for SARS-CoV-2 is still likely to miss those who are infected.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">2</span></a></p></li><li class="elsevierStyleListItem" id="lsti0040"><span class="elsevierStyleLabel">•</span><p id="par0065" class="elsevierStylePara elsevierViewall">Recent evidence is indicative of viral load being just as high in asymptomatic as symptomatic patients and additionally, viral loads tend to reduce more slowly in asymptomatic patients. This is a distressing prospect where the burden of the asymptomatic will be much higher than initially anticipated in the community and this suggests the need for longer and more stringent quarantines of all the asymptomatic, a huge logistical nightmare from a practicality viewpoint.</p></li><li class="elsevierStyleListItem" id="lsti0045"><span class="elsevierStyleLabel">•</span><p id="par0070" class="elsevierStylePara elsevierViewall">In contexts of the pandemic surging into cluster transmissions in settings of densely populated countries when technological advances still are not foolproof to ensure definitive home quarantine measures the‘3-T Strategy’ is unlikely to work.</p></li><li class="elsevierStyleListItem" id="lsti0050"><span class="elsevierStyleLabel">•</span><p id="par0075" class="elsevierStylePara elsevierViewall">Testing the entire community is a mammoth exercise with unquantified economic implications as it is not a one-time exercise. A striking example is the proposal by UK government to carry out up to 10 million covid-19 tests a day by early next year as part of a huge £100bn expansion of its national testing programme which almost matches its expenditure on the NHS (£130bn).<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">3</span></a></p></li><li class="elsevierStyleListItem" id="lsti0055"><span class="elsevierStyleLabel">•</span><p id="par0080" class="elsevierStylePara elsevierViewall">In a pandemic as the disease ramps up reaching epidemic scales it is understandable that the health resources get strained with policy paralysis and a breakdown of the system. In such a context this strategy is a logistical nightmare and more-so it is likely to drain resources from critical areas leading to collateral damages as has been evidenced in this pandemic.</p></li><li class="elsevierStyleListItem" id="lsti0060"><span class="elsevierStyleLabel">•</span><p id="par0085" class="elsevierStylePara elsevierViewall">The success of ‘3-T Strategy’ relies on the integrated success of each individual arm. In many instances uncoupling of this leads to dilution of the effectiveness. When one or two of the three arms of strategy gets uncoupled, it is only prudent to review the policy and modify it as per contextual dynamics.</p></li></ul></p><p id="par0090" class="elsevierStylePara elsevierViewall">It is imperative that we plan our responses based on how a given regional epidemic situation is evolving and accordingly devise a decision-making on switching from intervention tactics and control measures to strengthening the treatment arm. For instance, during the height of the epidemic the focus should be more on reducing mortality by early identification and treatment of symptomatic cases. In the background of unquantified community spread rigorous contact tracing of asymptomatic and institutional quarantines of asymptomatic suspects is a huge health burden and administrative lapse not many countries can ill-afford to commit. Optimization of control measures rest on the timing and dynamics of epidemic states at which they are enforced. The key in tilting the scales with this pandemic is switching tactics based on surveillance data from microbiological and epidemiological surveillance units on the phase and severity of the local epidemic and evolving our response in accordance. Probable models based on parametrization of disease transmission with possible mitigation mechanisms will aid us in developing model frameworks for the preventive, testing and interventional strategies based on varying local epidemiological scenarios, under specific settings and regional contexts.</p><p id="par0095" class="elsevierStylePara elsevierViewall">This pandemic has necessitated the dire need for every country to review, reassess and reorganize its epidemic response governance. There is a scope for adopting the best practices with flexibility in reshaping these well thought out strategies like the‘3-T Strategy’ as per the dynamics and regional requirements.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:3 [ 0 => array:2 [ "identificador" => "sec0005" "titulo" => "When is the ‘3-T Strategy’ likely to work?" ] 1 => array:2 [ "identificador" => "sec0010" "titulo" => "Emerging pitfalls with the ‘3-T Strategy’" ] 2 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0015" "bibliografiaReferencia" => array:3 [ 0 => array:3 [ "identificador" => "bib0020" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Asymptomatic transmission, the achilles’ heel of current strategies to control covid-19" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:3 [ 0 => "M. Gandhi" 1 => "D.S. Yokoe" 2 => "D.V. Havlir" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1056/NEJMe2009758" "Revista" => array:6 [ "tituloSerie" => "N Engl J Med" "fecha" => "2020" "volumen" => "382" "paginaInicial" => "2158" "paginaFinal" => "2160" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/32329972" "web" => "Medline" ] ] ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib0025" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Universal screening for SARS-CoV-2 infection: a rapid review" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "M. Viswanathan" 1 => "L. Kahwati" 2 => "B. Jahn" 3 => "K. Giger" 4 => "A.I. Dobrescu" 5 => "C. 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