Orchid M Allicock
she/her/hers
Associate Research ScientistCards
About
Research
Overview
Public Health Interests
Bioinformatics; COVID-19; Emerging Infectious Diseases; Global Health; Influenza; Respiratory Disease/Infections
Publications
2024
A low-cost culture- and DNA extraction-free method for the molecular detection of pneumococcal carriage in saliva
Peno C, Lin T, Hislop M, Yolda-Carr D, Farjado K, York A, Pitzer V, Weinberger D, Bei A, Allicock O, Wyllie A. A low-cost culture- and DNA extraction-free method for the molecular detection of pneumococcal carriage in saliva. Microbiology Spectrum 2024, 12: e00591-24. PMID: 39028185, PMCID: PMC11370248, DOI: 10.1128/spectrum.00591-24.Peer-Reviewed Original ResearchDetection of pneumococciDetection of pneumococcal carriagePneumococcal carriageCarriage surveillanceLow-resource settingsChildren attending childcare centersCarriage of pneumococciDNA extractionSaliva samplesMolecular methodsCultural enrichmentImprove surveillance effortsQPCR-based protocolPneumococcal vaccineExtraction-free methodMolecular detectionNucleic acid extractionVaccination strategiesPneumococciCulture-enrichment methodExtraction-free protocolPurified DNASalivaPaired samplesCarriage
2023
649. Expansion Of A Low-Cost, Open-Source, Saliva-Based PCR Test For The Detection Of Mpox Virus
Thomas R, Yolda-Carr D, Steel S, Tobik E, Zepeda T, Brownlee M, Saladi S, Parkin J, Fajardo K, Allicock O, Wyllie A. 649. Expansion Of A Low-Cost, Open-Source, Saliva-Based PCR Test For The Detection Of Mpox Virus. Open Forum Infectious Diseases 2023, 10: ofad500.712. PMCID: PMC10677374, DOI: 10.1093/ofid/ofad500.712.Peer-Reviewed Original Research881. Saliva-Based, Extraction-Free PCR Testing For The Detection Of Key Respiratory Pathogens
Allicock O, Lin T, Fajardo K, Yolda-Carr D, Hislop M, Wang J, Zuniga D, Platt W, Tuohy B, Peno C, Wyllie A. 881. Saliva-Based, Extraction-Free PCR Testing For The Detection Of Key Respiratory Pathogens. Open Forum Infectious Diseases 2023, 10: ofad500.926. PMCID: PMC10677551, DOI: 10.1093/ofid/ofad500.926.Peer-Reviewed Original ResearchSARS-CoV-2Saliva samplesRespiratory virusesRespiratory pathogensSARS-CoV-2 PCR testInfluenza A/BSARS-CoV-2 testingUpper respiratory tract pathogensAdditional respiratory virusesDetection of hMPVMass testing strategyPCR testCommon respiratory virusesCommon respiratory pathogensRespiratory tract pathogensKey respiratory pathogensYears of ageSARS-CoV-2 detectionGrant/research supportTransmissible infectious diseasesUse of salivaYale HealthRespiratory symptomsInfluenza B.Nasopharyngeal swabsThe potential of saliva as an accessible and sensitive sample type for the detection of respiratory pathogens and host immunity
Laxton C, Peno C, Hahn A, Allicock O, Perniciaro S, Wyllie A. The potential of saliva as an accessible and sensitive sample type for the detection of respiratory pathogens and host immunity. The Lancet Microbe 2023, 4: e837-e850. PMID: 37516121, DOI: 10.1016/s2666-5247(23)00135-0.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsSARS-CoV-2Respiratory pathogensPotential of salivaUsefulness of salivaUse of salivaRespiratory specimenRespiratory secretionsDisease burdenImmunological componentsImmunity surveillanceClinical utilityHost immunityClinical useDiagnostic testsNon-invasive natureSalivaCOVID-19 pandemicSample typesMethodological factorsPathogensImmunitySecretionMethod versatility in RNA extraction-free PCR detection of SARS-CoV-2 in saliva samples
Allicock O, Yolda-Carr D, Earnest R, Breban M, Vega N, Ott I, Kalinich C, Alpert T, Petrone M, Wyllie A. Method versatility in RNA extraction-free PCR detection of SARS-CoV-2 in saliva samples. Progress In Biophysics And Molecular Biology 2023, 182: 103-108. PMID: 37369293, PMCID: PMC10290768, DOI: 10.1016/j.pbiomolbio.2023.06.004.Peer-Reviewed Original ResearchPooled RNA-extraction-free testing of saliva for the detection of SARS-CoV-2
Allicock O, Yolda-Carr D, Todd J, Wyllie A. Pooled RNA-extraction-free testing of saliva for the detection of SARS-CoV-2. Scientific Reports 2023, 13: 7426. PMID: 37156888, PMCID: PMC10165292, DOI: 10.1038/s41598-023-34662-2.Peer-Reviewed Original ResearchConceptsSARS-CoV-2RT-qPCR assaysSARS-CoV-2 testingVirus-infected individualsAged care facilitiesSelf-collected salivaSARS-CoV-2 spreadActionable time frameAsymptomatic individualsTest turnaround timeHealthcare workersGeneral populationCare facilitiesTest availabilityWeekly testingFree testingClinical salivaPositive agreementClinical laboratoriesSalivaCT valuesSuch testingTesting workflowIndividual testingTesting protocolHigh Levels of Detection of Nonpneumococcal Species of Streptococcus in Saliva from Adults in the United States
Hislop M, Allicock O, Thammavongsa D, Mbodj S, Nelson A, Shaw A, Weinberger D, Wyllie A. High Levels of Detection of Nonpneumococcal Species of Streptococcus in Saliva from Adults in the United States. Microbiology Spectrum 2023, 11: e05207-22. PMID: 37067447, PMCID: PMC10269540, DOI: 10.1128/spectrum.05207-22.Peer-Reviewed Original ResearchPersistence of Pneumococcal Carriage among Older Adults in the Community despite COVID-19 Mitigation Measures
Wyllie A, Mbodj S, Thammavongsa D, Hislop M, Yolda-Carr D, Waghela P, Nakahata M, Stahlfeld A, Vega N, York A, Allicock O, Wilkins G, Ouyang A, Siqueiros L, Strong Y, Anastasio K, Alexander-Parrish R, Arguedas A, Gessner B, Weinberger D. Persistence of Pneumococcal Carriage among Older Adults in the Community despite COVID-19 Mitigation Measures. Microbiology Spectrum 2023, 11: e04879-22. PMID: 37036377, PMCID: PMC10269788, DOI: 10.1128/spectrum.04879-22.Peer-Reviewed Original ResearchConceptsInvasive pneumococcal diseasePneumococcal diseaseSchool-aged childrenOlder adultsPneumococcal carriageSaliva samplesCOVID-19 pandemicRate of carriageCOVID-19-related disruptionsUpper respiratory tractRegular contactNew Haven areaFirst yearCarriage prevalencePre-pandemic levelsMedical historyRespiratory tractHigh prevalenceStreptococcus pneumoniaeCOVID-19 mitigation measuresStudy participantsPneumococciPrevalenceDiseaseCarriageDeficient butyrate-producing capacity in the gut microbiome is associated with bacterial network disturbances and fatigue symptoms in ME/CFS
Guo C, Che X, Briese T, Ranjan A, Allicock O, Yates R, Cheng A, March D, Hornig M, Komaroff A, Levine S, Bateman L, Vernon S, Klimas N, Montoya J, Peterson D, Lipkin W, Williams B. Deficient butyrate-producing capacity in the gut microbiome is associated with bacterial network disturbances and fatigue symptoms in ME/CFS. Cell Host & Microbe 2023, 31: 288-304.e8. PMID: 36758522, PMCID: PMC10183837, DOI: 10.1016/j.chom.2023.01.004.Peer-Reviewed Original ResearchConceptsME/CFSFaecalibacterium prausnitziiMyalgic encephalomyelitis/chronic fatigue syndromeFecal short-chain fatty acidsChronic fatigue syndromeShort-chain fatty acidsGut microbiome diversityGut dysbiosisGastrointestinal disturbancesTherapeutic trialsFatigue severityFatigue syndromeOrthostatic intoleranceValidation cohortHealthy controlsCognitive dysfunctionFatigue symptomsGut microbiomeDiverse cohortButyrate producersHuman gutPossible targetsEubacterium rectaleCohortMulti-omics analysis
2022
Saliva-based methods for SARS-CoV-2 testing in low- and middle-income countries
Tan S, Allicock O, Katamba A, Carrington C, Wyllie A, Armstrong-Hough M. Saliva-based methods for SARS-CoV-2 testing in low- and middle-income countries. Bulletin Of The World Health Organization 2022, 100: 808-814. PMID: 36466209, PMCID: PMC9706358, DOI: 10.2471/blt.22.288526.Peer-Reviewed Original Research
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