Theodore Andreadis, PhD
Clinical Professor of Epidemiology (Microbial Diseases)About
Titles
Clinical Professor of Epidemiology (Microbial Diseases)
Biography
Dr. Theodore Andreadis is the Director of The Connecticut Agricultural Experiment Station and Head of the Center for Vector Biology & Zoonotic Diseases where he formally directed the State of Connecticut’s Mosquito and Arbovirus Research and Surveillance Programs. He is a native of Massachusetts, has two grown children and resides in Cheshire with his wife Peg.
Dr. Andreadis holds a B.S. degree in Wildlife and Fisheries Biology and M.S. degree in Medical Entomology from the University of Massachusetts at Amherst, and a Ph.D. in Insect Pathology from the University of Florida at Gainesville.
He is also holds an appointment as a Clinical Professor within the Epidemiology of Microbial Disease Division at the Yale School of Public Health and is an Adjunct Professor in the Department of Pathobiology at the University of Connecticut.
He is the author of over 195 scientific publications on mosquitoes and mosquito-borne diseases and his current research activities focus on the mosquito ecology, microbial control of mosquitoes and the epidemiology of mosquito-borne diseases
Appointments
Epidemiology of Microbial Diseases
Professor AdjunctPrimary
Other Departments & Organizations
Education & Training
- PhD
- University of Florida (1978)
- MS
- University of Massachusetts at Amherst, Medical Entomology (1975)
- BS
- University of Massachusetts at Amherst, Wildlife & Fisheries Biology (1972)
Research
Publications
2025
Host-feeding behavior of mosquitoes (Diptera: Culicidae) in North Dakota, 2003 to 2006
Anderson J, Bransfield A, Misencik M, Jones S, Main A, Armstrong P, Andreadis T, Molaei G. Host-feeding behavior of mosquitoes (Diptera: Culicidae) in North Dakota, 2003 to 2006. Journal Of Medical Entomology 2025, tjaf021. PMID: 39982739, DOI: 10.1093/jme/tjaf021.Peer-Reviewed Original ResearchMitochondrial cytochrome b geneWest Nile virusDiverse group of vertebratesSpecies of mosquitoesCytochrome b geneGroup of vertebratesBlood mealNorth DakotaFeeding behavior patternsB genePasserine birdsAmerican robinsIsolation of West Nile virusWestern equine encephalitis virusVertebrate speciesTransmission of arbovirusesSnowshoe hare virusBehavior of mosquitoesPCR assayCache Valley virusPermanent waterFeeding habitsTransmission of West Nile virusSeasonal shiftsVertebrate hosts
2024
Host-Feeding Behavior of Mosquitoes in the Florida Everglades
Anderson J, Molaei G, Fish D, Armstrong P, Khalil N, Brudner S, Misencik M, Bransfield A, Olson M, Andreadis T. Host-Feeding Behavior of Mosquitoes in the Florida Everglades. Vector-Borne And Zoonotic Diseases 2024, 24: 520-531. PMID: 38648543, DOI: 10.1089/vbz.2023.0072.Peer-Reviewed Original ResearchHispid cotton ratsWest Nile virusWading birdsAmerican alligatorMosquito speciesSusceptibility to WNVCulex nigripalpus</i>,Blood meals of mosquitoesFlorida EvergladesBlood mealMarsh rabbitWhite-tailed deerIndustrial sitesBlood-fed specimensEverglades virusSpecies of rodentsHost speciesBlood-fed mosquitoesAvian hostsTransmit West Nile virusBehavior of mosquitoesFrequent hostsPCR assayTensaw virusHost feeding behavior
2023
Emerging and lesser-known arboviruses impacting animal and human health
Faraji A, Molaei G, Andreadis T. Emerging and lesser-known arboviruses impacting animal and human health. Journal Of Medical Entomology 2023, 60: 1139-1141. PMID: 37862089, DOI: 10.1093/jme/tjad140.Peer-Reviewed Original ResearchSeasonality of Mosquitoes in North Dakota, 2003-2006, with Four New State Records.
Anderson J, Main A, Armstrong P, Andreadis T. Seasonality of Mosquitoes in North Dakota, 2003-2006, with Four New State Records. Journal Of The American Mosquito Control Association 2023, 39: 68-74. PMID: 37364183, DOI: 10.2987/23-7118.Peer-Reviewed Original Research
2022
Seasonal Dynamics of Mosquito-Borne Viruses in the Southwestern Florida Everglades, 2016, 2017.
Anderson J, Fish D, Armstrong P, Misencik M, Bransfield A, Ferrandino F, Andreadis T, Stenglein M, Kapuscinski M. Seasonal Dynamics of Mosquito-Borne Viruses in the Southwestern Florida Everglades, 2016, 2017. American Journal Of Tropical Medicine And Hygiene 2022, 106: 610-622. PMID: 35008051, PMCID: PMC8832897, DOI: 10.4269/ajtmh.20-1547.Peer-Reviewed Original ResearchConceptsSpecies of virusesSpecies of mosquitoesGumbo LimboShotgun metagenomic sequencingShark RiverSpecies complexWest Nile virusHardwood hammocksEverglades virusNotable speciesMosquito-Borne VirusesMetagenomic sequencingAnopheles speciesNile virusSeasonal dynamicsSpeciesFlorida EvergladesTensaw virusCulex nigripalpusEvergladesPools of CxCypress swampsNigripalpusMosquitoesAnopheles crucians
2021
Ecology and Epidemiology of Eastern Equine Encephalitis Virus in the Northeastern United States: An Historical Perspective
Armstrong P, Andreadis T. Ecology and Epidemiology of Eastern Equine Encephalitis Virus in the Northeastern United States: An Historical Perspective. Journal Of Medical Entomology 2021, 59: 1-13. PMID: 34734628, PMCID: PMC8755988, DOI: 10.1093/jme/tjab077.Peer-Reviewed Original ResearchConceptsEastern equine encephalitis virusEquine encephalitis virusOpportunistic feeding behaviourBird speciesRecent disease outbreaksWood ThrushWild birdsSporadic disease outbreaksAmerican robinsDisease outbreaksNortheastern United StatesBridge vectorsEEEV transmissionMosquito speciesEnzootic vectorNorthward expansionSpeciesVector competenceHigh mosquito densitiesCuliseta melanuraFeeding behaviorVirus transmissionEcologyMajor driverMelanuraThe community‐wide effectiveness of municipal larval control programs for West Nile virus risk reduction in Connecticut, USA
McMillan J, Harden C, Burtis J, Breban M, Shepard J, Petruff T, Misencik M, Bransfield A, Poggi J, Harrington L, Andreadis T, Armstrong P. The community‐wide effectiveness of municipal larval control programs for West Nile virus risk reduction in Connecticut, USA. Pest Management Science 2021, 77: 5186-5201. PMID: 34272800, PMCID: PMC9291174, DOI: 10.1002/ps.6559.Peer-Reviewed Original ResearchLa Crosse Virus Shows Strain-Specific Differences in Pathogenesis
Wilson S, López K, Coutermash-Ott S, Auguste D, Porier D, Armstrong P, Andreadis T, Eastwood G, Auguste A. La Crosse Virus Shows Strain-Specific Differences in Pathogenesis. Pathogens 2021, 10: 400. PMID: 33805389, PMCID: PMC8066585, DOI: 10.3390/pathogens10040400.Peer-Reviewed Original ResearchLa Crosse virusPediatric viral encephalitisNeuroinvasive capacityPublic health pathogenViral encephalitisImportant public health pathogenMurine modelEndemic regionsStrain-specific differencesTherapeutic efficacyExcessive mortalityPathogenesisViral strainsMouse studiesVirusNeurovirulenceMortalityContemporaneous strainsLineage IEntomological riskEncephalitisVaccineDisease
2020
Local persistence of novel regional variants of La Crosse virus in the Northeast USA
Eastwood G, Shepard J, Misencik M, Andreadis T, Armstrong P. Local persistence of novel regional variants of La Crosse virus in the Northeast USA. Parasites & Vectors 2020, 13: 569. PMID: 33176861, PMCID: PMC7659055, DOI: 10.1186/s13071-020-04440-4.Peer-Reviewed Original ResearchConceptsHuman casesMosquito-borne virusLa Crosse virusPediatric encephalitisField-collected mosquitoesLACV infectionConclusionOur analysisLocal mosquito populationsVirusPublic healthVirus lineagesLACVNew York StateMosquito populationsMosquitoesEncephalitisIsolatesLong-term persistenceInfectionPrevalenceCasesIncreased mosquito abundance and species richness in Connecticut, United States 2001–2019
Petruff T, McMillan J, Shepard J, Andreadis T, Armstrong P. Increased mosquito abundance and species richness in Connecticut, United States 2001–2019. Scientific Reports 2020, 10: 19287. PMID: 33159108, PMCID: PMC7648108, DOI: 10.1038/s41598-020-76231-x.Peer-Reviewed Original ResearchConceptsMosquito community compositionSpecies richnessCommunity compositionTotal species richnessLandscape-level changesNorthward range expansionAdditive mixed effects modelsMultiple insect taxaLand cover classificationMosquito surveillance dataLand useRange expansionHistorical declineInsect taxaMosquito abundanceMultiple speciesRichnessPsorophora genusCover classificationNortheast U.S.United States 2001Southern portionMosquito populationsMixed effects modelsPathogen transmission
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