Department of Veterinary Pathobiology

Ram RaghavanRam Raghavan
Assistant Professor

  • MPH
  • MS
  • Ph.D.

Building Address: 209 C Conaway Hall
Phone Number: 573 882-6728

Research Emphasis: Dr. Raghavan is broadly interested in spatially-enabled computational epidemiology of vector-borne and infectious diseases and applications of geospatial approaches for enhancing animal/public health. He extensively uses Geographic Information Science (GIS) and remote-sensing concepts in his research alongside geo-statistical, correlative modeling, and Bayesian modeling approaches for understanding spatio-temporal dynamics of non-stationary epidemiological processes. His current and prior research have identified important spatio-temporal patterns and spatial determinants for vector/water-borne zoonotic diseases from climatic, environmental, and socio-economic themes. Increasingly, his research strives to identify consistencies in complex meteorological variable associations (i.e. climate-change) with vector-borne diseases through the utilization of high-resolution ground-based and NASA Earth Observing System (EOS) datasets.

Teaching Responsibilities:
V_PBIO 5558/8458 Veterinary Public Health
V_PBIO 3650 Public Health Microbiology
P_HLTH 3450 Introduction to Epidemiology

Selected Publications:

Spare MR, Hanzlicek GA, Wootten KL, Anderson GA, Thomson DU, Sanderson MW, Ganta RR, Reif KE, Raghavan RK. Bovine Anaplasmosis Herd Prevalence and Management Practices as Risk-Factors Associated with Herd Disease Status. Veterinary Parasitology: X. 2019 Dec 6:100021. (

Trevisan G, Linhares LCM, Crim B, Dubey P, Schwartz KJ, Burrough ER, Main RG, Sundberg P, Thurn M, Lages PTF, Corzo CA, Torrison J, Henningson J, Herrman E, Hanzlicek GA, Raghavan RK, Marthaler D, Greseth J, Clement T, Christopher-Hennings J, Linhares DCL. Macroepidemiological aspects of porcine reproductive and respiratory syndrome virus detection by major United States veterinary diagnostic laboratories over time, age group, and specimen. PLoS One. 2019 Oct 16;14(10):e0223544. doi: 10.1371/journal.pone.0223544. PMID: 31618236; PMCID: PMC6795434. (

Raghavan RK, Barker SC, Cobos ME, Barker D, Teo EJM, Foley DH, Nakao R, Lawrence K, Heath ACG, Peterson AT. Potential Spatial Distribution of the Newly Introduced Long-horned Tick, Haemaphysalis longicornis in North America. Sci Rep. 2019 Jan 24;9(1):498. doi: 10.1038/s41598-018-37205-2. PubMed PMID: 30679711; PubMed Central PMCID: PMC6346113. (

Raghavan RK, Peterson AT, Cobos ME, Ganta R, Foley D. Current and Future Distribution of the Lone Star Tick, Amblyomma americanum (L.) (Acari: Ixodidae) in North America. PLoS One. 2019 Jan 2;14(1):e0209082. doi: 10.1371/journal.pone.0209082. eCollection 2019. PubMed PMID: 30601855; PubMed Central PMCID: PMC6314611. (

Savage HM, Godsey MS Jr, Tatman J, Burkhalter KL, Hamm A, Panella NA, Ghosh A, Raghavan RK. Surveillance for Heartland and Bourbon Viruses in Eastern Kansas, June 2016. J Med Entomol. 2018 Oct 25;55(6):1613-1616. doi: 10.1093/jme/tjy103. PubMed PMID: 29947778. (

Savage HM, Godsey MS Jr, Panella NA, Burkhalter KL, Manford J, Trevino-Garrison IC, Straily A, Wilson S, Bowen J, Raghavan RK. Surveillance for Tick-Borne Viruses Near the Location of a Fatal Human Case of Bourbon Virus (Family Orthomyxoviridae: Genus Thogotovirus) in Eastern Kansas, 2015. J Med Entomol. 2018 May 4;55(3):701-705. doi: 10.1093/jme/tjx251. PubMed PMID: 29365128. (

A. Townsend Peterson, Raghavan RK; The Leading Edge of the Geographic Distribution of Ixodes scapularis (Acari: Ixodidae), Journal of Medical Entomology, , tjx097, (

A. Townsend Peterson, Raghavan RK; The Geographic Distribution of Ixodes scapularis (Acari: Ixodidae) Revisited: The Importance of Assumptions About Error Balance, Journal of Medical Entomology, Volume 54, Issue 4, 1 July 2017, Pages 1080ñ1084, (

Raghavan RK, Goodin DG, Dryden MW, Hroobi A, Gordon DM, Cheng C, Nair AD, Jakkula LU, Hanzlicek GA, Anderson GA, Ganta RR. Heterogeneous Associations of Ecological Attributes with Tick-Borne Rickettsial Pathogens in a Periurban Landscape. Vector Borne Zoonotic Dis. 2016 Sep;16(9):569-76. doi: 10.1089/vbz.2016.1975. PubMed PMID: 27454144; PubMed Central PMCID: PMC5011634. (

Raghavan RK, Hanlon CA, Goodin DG, Davis R, Moore M, Moore S, Anderson GA. Bayesian Spatiotemporal Pattern and Eco-climatological Drivers of Striped Skunk Rabies in the North Central Plains. PLoS Negl Trop Dis. 2016 Apr 29;10(4):e0004632. doi: 10.1371/journal.pntd.0004632. eCollection 2016 Apr. PubMed PMID: 27127994. (

Hanzlicek GA, Raghavan RK, Ganta RR, Anderson GA. Bayesian Space-Time Patterns and Climatic Determinants of Bovine Anaplasmosis. PLoS One. 2016 Mar 22;11(3):e0151924. doi: 10.1371/journal.pone.0151924. eCollection 2016. PubMed PMID: 27003596; PubMed Central PMCID: PMC4803217. (

Raghavan RK, Goodin DG, Neises D, Anderson GA, Ganta RR. Hierarchical Bayesian Spatio-Temporal Analysis of Climatic and Socio-Economic Determinants of Rocky Mountain Spotted Fever. PLoS One. 2016 Mar 4;11(3):e0150180. doi:10.1371/journal.pone.0150180. eCollection 2016. PubMed PMID: 26942604; PubMed Central PMCID: PMC4778859. (

Raghavan RK, Goodin DG, Hanzlicek GA, Zolnerowich G, Dryden MW, Anderson GA, Ganta RR. Maximum Entropy-Based Ecological Niche Model and Bio-Climatic Determinants of Lone Star Tick (Amblyomma americanum) Niche. Vector Borne Zoonotic Dis. 2016 Mar;16(3):205-11. doi: 10.1089/vbz.2015.1837. Epub 2016 Jan 29. PubMed PMID: 26824880; PubMed Central PMCID: PMC4779976. (

Boysen C, Davis EG, Beard LA, Lubbers BV, Raghavan RK. Bayesian Geostatistical Analysis and Ecoclimatic Determinants of Corynebacterium pseudotuberculosis Infection among Horses. PLoS One. 2015 Oct 16;10(10):e0140666. doi:10.1371/journal.pone.0140666. eCollection 2015. PubMed PMID: 26473728; PubMed Central PMCID: PMC4608828. (

Raghavan RK, Saunders AB, Goodin DG, Anderson GA, Harkin KR. Geospatial Risk Factors of Canine American Trypanosomiasis (Chagas Disease) (42 Cases:2000-2012). Vector Borne Zoonotic Dis. 2015 Oct;15(10):602-10. doi:10.1089/vbz.2014.1754. Epub 2015 Sep 22. PubMed PMID: 26393300. (

Raghavan RK, Neises D, Goodin DG, Andresen DA, Ganta RR. Bayesian spatio-temporal analysis and geospatial risk factors of human monocytic ehrlichiosis. PLoS One. 2014 Jul 3;9(7):e100850. doi:10.1371/journal.pone.0100850. eCollection 2014. PubMed PMID: 24992684; PubMed Central PMCID: PMC4081574. (

Raghavan RK, Almes K, Goodin DG, Harrington JA Jr, Stackhouse PW Jr. Spatially heterogeneous land cover/land use and climatic risk factors of tick-borne feline cytauxzoonosis. Vector Borne Zoonotic Dis. 2014 Jul;14(7):486-95. doi:10.1089/vbz.2013.1496. Epub 2014 Jun 30. PubMed PMID: 24978652. (

Raghavan RK, Brenner KM, Harrington JA Jr, Higgins JJ, Harkin KR. Spatial scale effects in environmental risk-factor modelling for diseases. Geospat Health. 2013 May;7(2):169-82. PubMed PMID: 23733282. (

Raghavan RK, Harrington J Jr, Anderson GA, Hutchinson JM, Debey BM. Environmental, climatic, and residential neighborhood determinants of feline tularemia. Vector Borne Zoonotic Dis. 2013 Jul;13(7):449-56. doi:10.1089/vbz.2012.1234. Epub 2013 Apr 17. PubMed PMID: 23593930. (

Raghavan RK, Brenner KM, Higgins JJ, Hutchinson JM, Harkin KR. Evaluations of hydrologic risk factors for canine leptospirosis: 94 cases (2002-2009). Prev Vet Med. 2012 Nov 1;107(1-2):105-9. doi: 10.1016/j.prevetmed.2012.05.004. Epub 2012 Jun 6. PubMed PMID: 22676955. (

Raghavan RK, Brenner KM, Higgins JJ, Shawn Hutchinson JM, Harkin KR. Neighborhood-level socioeconomic and urban land use risk factors of canine leptospirosis: 94 cases (2002-2009). Prev Vet Med. 2012 Oct 1;106(3-4):324-31. doi: 10.1016/j.prevetmed.2012.04.003. Epub 2012 May 23. PubMed PMID: 22626864. (

Raghavan RK , Brenner K, Higgins J, Van der Merwe D, Harkin KR. Evaluations of land cover risk factors for canine leptospirosis: 94 cases (2002-2009). Prev Vet Med. 2011 Sep 1;101(3-4):241-9. doi: 10.1016/j.prevetmed.2011.05.010. Epub 2011 Jul 2. PubMed PMID: 21724280. (



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