2024
Levels of Cytokines in Leptospirosis Patients with Different Serovars and rfb Locus
Senavirathna I, Jayasundara D, Warnasekara J, Kappagoda C, Agampodi S. Levels of Cytokines in Leptospirosis Patients with Different Serovars and rfb Locus. Journal Of Interferon & Cytokine Research 2024, 44: 80-93. PMID: 38377491, PMCID: PMC10880283, DOI: 10.1089/jir.2023.0091.Peer-Reviewed Original ResearchConceptsRfb locusGenome sequencePacBio RS II systemBacterial cell wallCulture-positive samplesLipopolysaccharide synthesisRapid AnnotationLeptospira borgpetersenii</i>,Genomic dataMicroscopic agglutination testSubsystem TechnologyLociCell wallSerovarsIsolated culturesSevere clinical manifestationsCytokine responsesLeptospira interrogans serovar autumnalisClinical manifestationsGenomeSamples of cultureSequenceRFBLevels of cytokinesSerum cytokine concentrations
2022
Diagnostic method-based underestimation of leptospirosis in clinical and research settings; an experience from a large prospective study in a high endemic setting
Warnasekara J, Srimantha S, Kappagoda C, Jayasundara D, Senevirathna I, Matthias M, Agampodi S, Vinetz J. Diagnostic method-based underestimation of leptospirosis in clinical and research settings; an experience from a large prospective study in a high endemic setting. PLOS Neglected Tropical Diseases 2022, 16: e0010331. PMID: 35377883, PMCID: PMC9009773, DOI: 10.1371/journal.pntd.0010331.Peer-Reviewed Original ResearchMeSH KeywordsAgglutination TestsHumansLeptospiraLeptospirosisProspective StudiesRetrospective StudiesConceptsMicroscopic agglutination testProspective hospital-based studyLeptospirosis casesQuantitative PCRHigh endemic settingHospital-based studyClinical case definitionLarge prospective studiesDisease burden estimatesPublic health burdenStandard diagnostic testMonths of observationUndifferentiated feverAcute leptospirosisProspective studyCase definitionEndemic settingsHealth burdenTimely diagnosisBurden estimatesDiagnostic valueSignificant human mortalityAgglutination testStudy settingDiagnostic tests
2021
Optimizing the microscopic agglutination test (MAT) panel for the diagnosis of Leptospirosis in a low resource, hyper-endemic setting with varied microgeographic variation in reactivity
Jayasundara D, Gamage C, Senavirathna I, Warnasekara J, Matthias MA, Vinetz J, Agampodi S. Optimizing the microscopic agglutination test (MAT) panel for the diagnosis of Leptospirosis in a low resource, hyper-endemic setting with varied microgeographic variation in reactivity. PLOS Neglected Tropical Diseases 2021, 15: e0009565. PMID: 34197457, PMCID: PMC8279374, DOI: 10.1371/journal.pntd.0009565.Peer-Reviewed Original Research12 Novel clonal groups of Leptospira infecting humans in multiple contrasting epidemiological contexts in Sri Lanka
Jayasundara D, Senavirathna I, Warnasekara J, Gamage C, Siribaddana S, Kularatne SAM, Matthias M, Mariet JF, Picardeau M, Agampodi S, Vinetz J. 12 Novel clonal groups of Leptospira infecting humans in multiple contrasting epidemiological contexts in Sri Lanka. PLOS Neglected Tropical Diseases 2021, 15: e0009272. PMID: 33735202, PMCID: PMC8009393, DOI: 10.1371/journal.pntd.0009272.Peer-Reviewed Original ResearchConceptsClonal groupsAcute kidney injuryL. interrogansMajor clinical challengeGlobal disease threatsLeptospira speciesL. interrogans infectionKidney injuryLiver impairmentCardiovascular involvementL. borgpeterseniiClinical presentationProspective studyClinical severityClinical challengePathogenic Leptospira speciesAnnual epidemicsUbiquitous zoonotic diseaseNew serogroupEpidemiological contextZoonotic diseaseCulture isolationLeptospiral culturesL. weiliiLeptospira diversity
2020
Cytokine response in human leptospirosis with different clinical outcomes: a systematic review
Senavirathna I, Rathish D, Agampodi S. Cytokine response in human leptospirosis with different clinical outcomes: a systematic review. BMC Infectious Diseases 2020, 20: 268. PMID: 32264832, PMCID: PMC7137275, DOI: 10.1186/s12879-020-04986-9.Peer-Reviewed Original ResearchConceptsDifferent clinical outcomesCross-sectional studyCytokine responsesIL-10Clinical outcomesSystematic reviewDisease severityHealth Quality Assessment ToolComparative cross-sectional studyTNF-α levelsMethodsA systematic reviewMeasurement of cytokinesEnzyme-linked immunosorbent assayMicroscopic agglutination testPublic health professionalsQuality assessment toolMild leptospirosisCytokine stormElevated cytokinesObservational cohortLeptospirosis patientsProspective studyIL-1βIL-6IL-8
2019
Study protocol: characterising the clinical, epidemiological and aetiological aspects of leptospirosis in Sri Lanka: a hospital based clinico-epidemiological study
Agampodi S, Warnasekara J, Jayasundara D, Senawirathna I, Gamage C, Kularatne S, Siribaddana S, Maththias M, Vinetz J. Study protocol: characterising the clinical, epidemiological and aetiological aspects of leptospirosis in Sri Lanka: a hospital based clinico-epidemiological study. BMJ Open 2019, 9: e027850. PMID: 31511281, PMCID: PMC6738675, DOI: 10.1136/bmjopen-2018-027850.Peer-Reviewed Original ResearchConceptsEthics Review CommitteeMultilocus sequence typingOutpatient departmentClinico-epidemiological studyMulticentre prospective studyDay of admissionMicroscopic agglutination testPresence of diseaseHospital stayFebrile patientsMedical wardsProspective studySri Lankan isolatesRisk factorsVenous bloodDisease progressionEthical clearanceHigh incidenceAetiological aspectsPatientsAgglutination testMolecular epidemiologyPatient contextBedside inoculationLeptospirosis
2016
Redefining Gold Standard Testing for Diagnosing Leptospirosis: Further Evidence from a Well-Characterized, Flood-Related Outbreak in Sri Lanka.
Agampodi SB, Dahanayaka NJ, Nöckler K, Mayer-Scholl A, Vinetz JM. Redefining Gold Standard Testing for Diagnosing Leptospirosis: Further Evidence from a Well-Characterized, Flood-Related Outbreak in Sri Lanka. American Journal Of Tropical Medicine And Hygiene 2016, 95: 531-536. PMID: 27402521, PMCID: PMC5014254, DOI: 10.4269/ajtmh.16-0033.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgglutination TestsCross-Sectional StudiesDisease OutbreaksFemaleFoodborne DiseasesHumansLeptospirosisMalePolymerase Chain ReactionSri LankaConceptsEnzyme-linked immunosorbent assayMicroscopic agglutination testIgG enzyme-linked immunosorbent assayQuantitative polymerase chain reactionImmunoglobulin G (IgG) ELISAHouse enzyme-linked immunosorbent assayDays of illnessAcute-phase seraCases of leptospirosisAvailable enzyme-linked immunosorbent assayGold standard testingMAT positive samplesDiagnostic test resultsAcute specimensAcute phasePatient populationPhase seraPolymerase chain reactionBlood samplesSerological sensitivityAgglutination testImmunosorbent assayLeptospirosisLeptospira kirschneriDominant serovars
2012
Utility of Quantitative Polymerase Chain Reaction in Leptospirosis Diagnosis: Association of Level of Leptospiremia and Clinical Manifestations in Sri Lanka
Agampodi SB, Matthias MA, Moreno AC, Vinetz JM. Utility of Quantitative Polymerase Chain Reaction in Leptospirosis Diagnosis: Association of Level of Leptospiremia and Clinical Manifestations in Sri Lanka. Clinical Infectious Diseases 2012, 54: 1249-1255. PMID: 22354922, PMCID: PMC3404689, DOI: 10.1093/cid/cis035.Peer-Reviewed Original ResearchConceptsQuantitative polymerase chain reactionClinical manifestationsPolymerase chain reactionBlood samplesChain reactionWhole bloodOnset of symptomsSensitivity of qPCRAssociation of levelsSerum/bloodMicroscopic agglutination test panelValid diagnostic testPatient blood samplesOptimal sample typeFailure patientsRenal failureWhole blood samplesPatient populationTimely diagnosisLeptospiral loadEndemic areasDay 2Day 15LeptospiremiaDiagnostic testsPredictors of the development of myocarditis or acute renal failure in patients with leptospirosis: An observational study
Dassanayake D, Wimalaratna H, Nandadewa D, Nugaliyadda A, Ratnatunga CN, Agampodi SB. Predictors of the development of myocarditis or acute renal failure in patients with leptospirosis: An observational study. BMC Infectious Diseases 2012, 12: 4. PMID: 22243770, PMCID: PMC3292442, DOI: 10.1186/1471-2334-12-4.Peer-Reviewed Original ResearchMeSH KeywordsAcute Kidney InjuryAdultAgglutination TestsFemaleHospitals, TeachingHumansLeptospirosisMaleMiddle AgedMyocarditisProspective StudiesSri LankaConceptsAcute renal failureRenal failureClinical featuresMicroscopic agglutination testOdds ratioTeaching hospitalExact testComplication of leptospirosisDevelopment of myocarditisLaboratory measuresCommon clinical featuresVaried clinical presentationsProspective descriptive studyPredictors of severityFisher's exact testMann-Whitney U testLogistic regression modelsPain 6ResultsSixty-twoLaboratory parametersClinical presentationLaboratory variablesLaboratory predictorsLeptospirosis patientsCase definition
2009
Evaluation of surveillance case definition in the diagnosis of leptospirosis, using the Microscopic Agglutination Test: a validation study
Dassanayake D, Wimalaratna H, Agampodi SB, Liyanapathirana VC, Piyarathna T, Goonapienuwala BL. Evaluation of surveillance case definition in the diagnosis of leptospirosis, using the Microscopic Agglutination Test: a validation study. BMC Infectious Diseases 2009, 9: 48. PMID: 19386085, PMCID: PMC2679753, DOI: 10.1186/1471-2334-9-48.Peer-Reviewed Original ResearchConceptsSurveillance case definitionMicroscopic agglutination testCase definitionNegative predictive valuePredictive valueClinical featuresMAT titresAgglutination testDays of feverAcute febrile illnessMethodsThe study populationTeaching Hospital KandyPositive predictive valueDiagnosis of leptospirosisPositive MAT resultsFebrile illnessMedical wardsResultsA totalHospital KandyStudy populationBlood samplesConclusionThis studyPatientsDiagnostic accuracyLeptospirosis