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Karen Shapiro

Title(s)Associate Researcher, SCHOOL OF VETERINARY MEDICINE
SchoolUniversity of California, Davis
Phone530-754-1353
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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    1. de Wit LA, Kilpatrick AM, VanWormer E, Croll DA, Tershy BR, Kim M, Shapiro K. Seasonal and spatial variation in Toxoplasma gondii contamination in soil in urban public spaces in California, United States. Zoonoses Public Health. 2019 Nov 01. PMID: 31677251.
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    2. Shapiro K, VanWormer E, Packham A, Dodd E, Conrad PA, Miller M. Type X strains of Toxoplasma gondii are virulent for southern sea otters (Enhydra lutris nereis) and present in felids from nearby watersheds. Proc Biol Sci. 2019 Aug 28; 286(1909):20191334. PMID: 31431162.
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    3. Julien DA, Sargeant JM, Guy RA, Shapiro K, Imai RK, Bunce A, Sudlovenick E, Chen S, Li J, Harper SL. Prevalence and genetic characterization of Giardia spp. and Cryptosporidium spp. in dogs in Iqaluit, Nunavut, Canada. Zoonoses Public Health. 2019 11; 66(7):813-825. PMID: 31305029.
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    4. Shapiro K, Kim M, Rajal VB, Arrowood MJ, Packham A, Aguilar B, Wuertz S. Simultaneous detection of four protozoan parasites on leafy greens using a novel multiplex PCR assay. Food Microbiol. 2019 Dec; 84:103252. PMID: 31421749.
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    5. Coupe A, Howe L, Shapiro K, Roe WD. Comparison of PCR assays to detect Toxoplasma gondii oocysts in green-lipped mussels (Perna canaliculus). Parasitol Res. 2019 Aug; 118(8):2389-2398. PMID: 31197544.
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    6. Manore AJW, Harper SL, Aguilar B, Weese JS, Shapiro K. Comparison of freeze-thaw cycles for nucleic acid extraction and molecular detection of Cryptosporidium parvum and Toxoplasma gondii oocysts in environmental matrices. J Microbiol Methods. 2019 01; 156:1-4. PMID: 30468750.
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    7. Shapiro K, Silver M, Byrne BA, Berardi T, Aguilar B, Melli A, Smith WA. Fecal indicator bacteria and zoonotic pathogens in marine snow and California mussels (Mytilus californianus). FEMS Microbiol Ecol. 2018 11 01; 94(11). PMID: 30239730.
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    8. Hanley KT, Wuertz S, Schriewer A, Passow U, Smith W, Olin P, Shapiro K. Effects of salinity and transparent exopolymer particles on formation of aquatic aggregates and their association with norovirus. Sci Total Environ. 2018 Dec 01; 643:1514-1521. PMID: 30189567.
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    9. Coupe A, Howe L, Burrows E, Sine A, Pita A, Velathanthiri N, Vallée E, Hayman D, Shapiro K, Roe WD. First report of Toxoplasma gondii sporulated oocysts and Giardia duodenalis in commercial green-lipped mussels (Perna canaliculus) in New Zealand. Parasitol Res. 2018 May; 117(5):1453-1463. PMID: 29550995.
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    10. Schott KC, Krusor C, Tinker MT, Moore J, Conrad PA, Shapiro K. Concentration and retention of Toxoplasma gondii surrogates from seawater by red abalone (Haliotis rufescens). Parasitology. 2016 11; 143(13):1703-1712. PMID: 27573192.
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    11. VanWormer E, Carpenter TE, Singh P, Shapiro K, Wallender WW, Conrad PA, Largier JL, Maneta MP, Mazet JA. Coastal development and precipitation drive pathogen flow from land to sea: evidence from a Toxoplasma gondii and felid host system. Sci Rep. 2016 07 26; 6:29252. PMID: 27456911.
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    12. Michaels L, Rejmanek D, Aguilar B, Conrad P, Shapiro K. California mussels (Mytilus californianus) as sentinels for marine contamination with Sarcocystis neurona. Parasitology. 2016 05; 143(6):762-9. PMID: 27003262.
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    13. Girard YA, Johnson CK, Fritz HM, Shapiro K, Packham AE, Melli AC, Carlson-Bremer D, Gulland FM, Rejmanek D, Conrad PA. Detection and characterization of diverse coccidian protozoa shed by California sea lions. Int J Parasitol Parasites Wildl. 2016 Apr; 5(1):5-16. PMID: 27141438.
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    14. Shapiro K, Miller MA, Packham AE, Aguilar B, Conrad PA, Vanwormer E, Murray MJ. Dual congenital transmission of Toxoplasma gondii and Sarcocystis neurona in a late-term aborted pup from a chronically infected southern sea otter (Enhydra lutris nereis). Parasitology. 2016 Mar; 143(3):276-88. PMID: 26494610.
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    15. Aleman M, Shapiro K, Sisó S, Williams DC, Rejmanek D, Aguilar B, Conrad PA. Sarcocystis fayeri in skeletal muscle of horses with neuromuscular disease. Neuromuscul Disord. 2016 Jan; 26(1):85-93. PMID: 26522989.
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    16. Krusor C, Smith WA, Tinker MT, Silver M, Conrad PA, Shapiro K. Concentration and retention of Toxoplasma gondii oocysts by marine snails demonstrate a novel mechanism for transmission of terrestrial zoonotic pathogens in coastal ecosystems. Environ Microbiol. 2015 Nov; 17(11):4527-37. PMID: 26033089.
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    17. Davidson MC, Berardi T, Aguilar B, Byrne BA, Shapiro K. Effects of transparent exopolymer particles and suspended particles on the survival of Salmonella enterica serovar Typhimurium in seawater. FEMS Microbiol Ecol. 2015 Mar; 91(3). PMID: 25764565.
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    18. Shapiro K, VanWormer E, Aguilar B, Conrad PA. Surveillance for Toxoplasma gondii in California mussels (Mytilus californianus) reveals transmission of atypical genotypes from land to sea. Environ Microbiol. 2015 Nov; 17(11):4177-88. PMID: 25367256.
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    19. Shapiro K, Krusor C, Mazzillo FF, Conrad PA, Largier JL, Mazet JA, Silver MW. Aquatic polymers can drive pathogen transmission in coastal ecosystems. Proc Biol Sci. 2014 11 22; 281(1795). PMID: 25297861.
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    20. Adell AD, Smith WA, Shapiro K, Melli A, Conrad PA. Molecular epidemiology of Cryptosporidium spp. and Giardia spp. in mussels (Mytilus californianus) and California sea lions (Zalophus californianus) from Central California. Appl Environ Microbiol. 2014 Dec; 80(24):7732-40. PMID: 25281384.
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    21. Berardi T, Shapiro K, Byrne BA, Miller W. Prevalence and characterization of Salmonella shed by captive and free-range California sea lions (Zalophus californianus) from a rehabilitation center and three state reserves along the California coast. J Zoo Wildl Med. 2014 Sep; 45(3):527-33. PMID: 25314819.
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    22. Daniels ME, Hogan J, Smith WA, Oates SC, Miller MA, Hardin D, Shapiro K, Los Huertos M, Conrad PA, Dominik C, Watson FG. Estimating environmental conditions affecting protozoal pathogen removal in surface water wetland systems using a multi-scale, model-based approach. Sci Total Environ. 2014 Sep 15; 493:1036-46. PMID: 25016109.
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    23. Mazzillo FF, Shapiro K, Silver MW. A new pathogen transmission mechanism in the ocean: the case of sea otter exposure to the land-parasite Toxoplasma gondii. PLoS One. 2013; 8(12):e82477. PMID: 24386100.
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    24. Verant ML, d'Ozouville N, Parker PG, Shapiro K, VanWormer E, Deem SL. Attempted detection of Toxoplasma gondii oocysts in environmental waters using a simple approach to evaluate the potential for waterborne transmission in the Galápagos Islands, Ecuador. Ecohealth. 2014 Jun; 11(2):207-14. PMID: 24306552.
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    25. Orlofsky E, Gillor O, Melli A, Miller W, Wuertz S, Bernstein N, Shapiro K. Simultaneous detection of Giardia lamblia and Cryptosporidium parvum (oo)cysts in soil using immunomagnetic separation and direct fluorescent antibody staining. J Microbiol Methods. 2013 Sep; 94(3):375-7. PMID: 23911570.
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    26. Hogan JN, Daniels ME, Watson FG, Oates SC, Miller MA, Conrad PA, Shapiro K, Hardin D, Dominik C, Melli A, Jessup DA, Miller WA. Hydrologic and vegetative removal of Cryptosporidium parvum, Giardia lamblia, and Toxoplasma gondii Surrogate microspheres in coastal wetlands. Appl Environ Microbiol. 2013 Mar; 79(6):1859-65. PMID: 23315738.
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    27. Shapiro K, Miller WA, Silver MW, Odagiri M, Largier JL, Conrad PA, Mazet JA. Research commentary: Association of zoonotic pathogens with fresh, estuarine, and marine macroaggregates. Microb Ecol. 2013 May; 65(4):928-33. PMID: 23250114.
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    28. VanWormer E, Fritz H, Shapiro K, Mazet JA, Conrad PA. Molecules to modeling: Toxoplasma gondii oocysts at the human-animal-environment interface. Comp Immunol Microbiol Infect Dis. 2013 May; 36(3):217-31. PMID: 23218130.
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    29. Shapiro K, Miller M, Mazet J. Temporal association between land-based runoff events and California sea otter (Enhydra lutris nereis) protozoal mortalities. J Wildl Dis. 2012 Apr; 48(2):394-404. PMID: 22493114.
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    30. Shapiro K. Climate and coastal habitat change: a recipe for a dirtier ocean. Mar Pollut Bull. 2012 Jun; 64(6):1079-80. PMID: 22341407.
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    31. Shapiro K, Conrad PA, Mazet JA, Wallender WW, Miller WA, Largier JL. Effect of estuarine wetland degradation on transport of Toxoplasma gondii surrogates from land to sea. Appl Environ Microbiol. 2010 Oct; 76(20):6821-8. PMID: 20802072.
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    32. Shapiro K, Mazet JA, Schriewer A, Wuertz S, Fritz H, Miller WA, Largier J, Conrad PA. Detection of Toxoplasma gondii oocysts and surrogate microspheres in water using ultrafiltration and capsule filtration. Water Res. 2010 Feb; 44(3):893-903. PMID: 19836820.
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    33. Shapiro K, Largier J, Mazet JA, Bernt W, Ell JR, Melli AC, Conrad PA. Surface properties of Toxoplasma gondii oocysts and surrogate microspheres. Appl Environ Microbiol. 2009 Feb; 75(4):1185-91. PMID: 19060174.
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