2024
Overestimation of Severe Acute Respiratory Syndrome Coronavirus 2 Household Transmission in Settings of High Community Transmission: Insights From an Informal Settlement Community in Salvador, Brazil
Ticona J, Nery N, Hitchings M, Belitardo E, Fofana M, Dorión M, Victoriano R, Cruz J, Santana J, de Moraes L, Cardoso C, Ribeiro G, Reis M, Khouri R, Costa F, Ko A, Cummings D. Overestimation of Severe Acute Respiratory Syndrome Coronavirus 2 Household Transmission in Settings of High Community Transmission: Insights From an Informal Settlement Community in Salvador, Brazil. Open Forum Infectious Diseases 2024, 11: ofae065. PMID: 38516384, PMCID: PMC10957159, DOI: 10.1093/ofid/ofae065.Peer-Reviewed Original ResearchSARS-CoV-2Household transmissionRT-PCR positive casesSecondary attack rateAttack rateSARS-CoV-2 infectionSARS-CoV-2 Omicron variantRisk of infectionCommunity acquisitionTherapeutic optionsCOVID-19-related symptomsCase-finding studyHousehold contactsAcquisition of SARS-CoV-2Increased riskSymptom onsetSecondary infectionBooster vaccinationSevere outcomesBiweekly visitsHighest attack rateRT-PCRInfectionCOVID-19 severe outcomesOmicron BA
2022
Association between primary or booster COVID-19 mRNA vaccination and Omicron lineage BA.1 SARS-CoV-2 infection in people with a prior SARS-CoV-2 infection: A test-negative case–control analysis
Lind M, Robertson A, Silva J, Warner F, Coppi A, Price N, Duckwall C, Sosensky P, Di Giuseppe E, Borg R, Fofana M, Ranzani O, Dean N, Andrews J, Croda J, Iwasaki A, Cummings D, Ko A, Hitchings M, Schulz W. Association between primary or booster COVID-19 mRNA vaccination and Omicron lineage BA.1 SARS-CoV-2 infection in people with a prior SARS-CoV-2 infection: A test-negative case–control analysis. PLOS Medicine 2022, 19: e1004136. PMID: 36454733, PMCID: PMC9714718, DOI: 10.1371/journal.pmed.1004136.Peer-Reviewed Original ResearchConceptsSARS-CoV-2 infectionBooster vaccinationPrior infectionOmicron infectionPrimary vaccinationMRNA vaccinationOdds ratioAcute respiratory syndrome coronavirus 2 infectionSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infectionPrior SARS-CoV-2 infectionTest-negative case-control analysisYale New Haven Health SystemTest-negative case-control studyCOVID-19 mRNA vaccinationSyndrome coronavirus 2 infectionOmicron variant infectionPrior infection statusCoronavirus 2 infectionCase-control studyCase-control analysisOdds of infectionRisk of infectionRace/ethnicityBooster dosesDate of test
2021
Spatial and Simultaneous Seroprevalence of Anti-Leptospira Antibodies in Owners and Their Domiciled Dogs in a Major City of Southern Brazil
do Nascimento Benitez A, Monica T, Miura A, Romanelli M, Giordano L, Freire R, Mitsuka-Breganó R, Martins C, Biondo A, Serrano I, Lopes T, Reis R, Gomes J, Costa F, Wunder E, Ko A, Navarro I. Spatial and Simultaneous Seroprevalence of Anti-Leptospira Antibodies in Owners and Their Domiciled Dogs in a Major City of Southern Brazil. Frontiers In Veterinary Science 2021, 7: 580400. PMID: 33490126, PMCID: PMC7820180, DOI: 10.3389/fvets.2020.580400.Peer-Reviewed Original ResearchRisk factorsAnti-Leptospira antibodiesLogistic regression analysisRisk of infectionDog casesPositive dogsHigh titersSerogroup CanicolaInfectionSeropositivityHuman casesDogsFrequent serogroupsSame titerCanicolaTitersGreater likelihoodRegression analysisSeroprevalenceCase distributionSame householdDog ownersAntibodiesPresent studySerogroups
2019
Seroprevalence, Risk Factors, and Rodent Reservoirs of Leptospirosis in an Urban Community of Puerto Rico, 2015
Briskin EA, Casanovas-Massana A, Ryff KR, Morales-Estrada S, Hamond C, Perez-Rodriguez NM, Benavidez KM, Weinberger DM, Castro-Arellano I, Wunder EA, Sharp TM, Rivera-Garcia B, Ko AI. Seroprevalence, Risk Factors, and Rodent Reservoirs of Leptospirosis in an Urban Community of Puerto Rico, 2015. The Journal Of Infectious Diseases 2019, 220: 1489-1497. PMID: 31342075, PMCID: PMC6761939, DOI: 10.1093/infdis/jiz339.Peer-Reviewed Original ResearchConceptsRisk factorsAnti-Leptospira antibodiesBurden of leptospirosisRisk of infectionMicroscopic agglutination testCross-sectional surveyQuantitative polymerase chain reactionSeropositive individualsPrevious infectionPolymerase chain reactionLeptospira infectionLeptospira carriageSerogroup IcterohaemorrhagiaeHigh titersStudy participantsAgglutination testLeptospira exposurePathogenic LeptospiraInfectionRodent reservoirsChain reactionAntibodiesRodent trappingSeroprevalenceCommunity sites