Karen Shapiro

Title(s)Associate Professor, School of Veterinary Medicine
SchoolUniversity of California, Davis
Address5303 VM3A
CA 95616
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Application of next generation sequencing for detection of protozoan pathogens in shellfish. Food Waterborne Parasitol. 2020 Dec; 21:e00096. DeMone C, Hwang MH, Feng Z, McClure JT, Greenwood SJ, Fung R, Kim M, Weese JS, Shapiro K. PMID: 33299933.
      View in: PubMed   Mentions:
    2. Cryptosporidium and Giardia in locally harvested clams in Iqaluit, Nunavut. Zoonoses Public Health. 2020 06; 67(4):352-361. Manore AJW, Harper SL, Sargeant JM, Weese JS, Cunsolo A, Bunce A, Shirley J, Sudlovenick E, Shapiro K. PMID: 32065491.
      View in: PubMed   Mentions: 1     Fields:    
    3. Seasonal and spatial variation in Toxoplasma gondii contamination in soil in urban public spaces in California, United States. Zoonoses Public Health. 2020 02; 67(1):70-78. de Wit LA, Kilpatrick AM, VanWormer E, Croll DA, Tershy BR, Kim M, Shapiro K. PMID: 31677251.
      View in: PubMed   Mentions: 1     Fields:    
    4. 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 08 28; 286(1909):20191334. Shapiro K, VanWormer E, Packham A, Dodd E, Conrad PA, Miller M. PMID: 31431162.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    5. 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. Julien DA, Sargeant JM, Guy RA, Shapiro K, Imai RK, Bunce A, Sudlovenick E, Chen S, Li J, Harper SL. PMID: 31305029.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    6. Simultaneous detection of four protozoan parasites on leafy greens using a novel multiplex PCR assay. Food Microbiol. 2019 Dec; 84:103252. Shapiro K, Kim M, Rajal VB, Arrowood MJ, Packham A, Aguilar B, Wuertz S. PMID: 31421749.
      View in: PubMed   Mentions: 4     Fields:    Translation:AnimalsCellsPHPublic Health
    7. Comparison of PCR assays to detect Toxoplasma gondii oocysts in green-lipped mussels (Perna canaliculus). Parasitol Res. 2019 Aug; 118(8):2389-2398. Coupe A, Howe L, Shapiro K, Roe WD. PMID: 31197544.
      View in: PubMed   Mentions: 1     Fields:    Translation:AnimalsCells
    8. Environmental transmission of Toxoplasma gondii: Oocysts in water, soil and food. Food Waterborne Parasitol. 2019 Jun; 15:e00049. Shapiro K, Bahia-Oliveira L, Dixon B, Dumètre A, de Wit LA, VanWormer E, Villena I. PMID: 32095620.
      View in: PubMed   Mentions:
    9. Structure, composition, and roles of the Toxoplasma gondii oocyst and sporocyst walls. Cell Surf. 2019 Dec; 5:100016. Freppel W, Ferguson DJP, Shapiro K, Dubey JP, Puech PH, Dumètre A. PMID: 32743133.
      View in: PubMed   Mentions:
    10. 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. Manore AJW, Harper SL, Aguilar B, Weese JS, Shapiro K. PMID: 30468750.
      View in: PubMed   Mentions:    Fields:    Translation:AnimalsCells
    11. Fecal indicator bacteria and zoonotic pathogens in marine snow and California mussels (Mytilus californianus). FEMS Microbiol Ecol. 2018 11 01; 94(11). Shapiro K, Silver M, Byrne BA, Berardi T, Aguilar B, Melli A, Smith WA. PMID: 30239730.
      View in: PubMed   Mentions: 1     Fields:    Translation:AnimalsCellsPHPublic Health
    12. 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. Hanley KT, Wuertz S, Schriewer A, Passow U, Smith W, Olin P, Shapiro K. PMID: 30189567.
      View in: PubMed   Mentions:    Fields:    Translation:HumansAnimalsCells
    13. 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. Coupe A, Howe L, Burrows E, Sine A, Pita A, Velathanthiri N, Vallée E, Hayman D, Shapiro K, Roe WD. PMID: 29550995.
      View in: PubMed   Mentions: 6     Fields:    Translation:HumansAnimalsCells
    14. Concentration and retention of Toxoplasma gondii surrogates from seawater by red abalone (Haliotis rufescens). Parasitology. 2016 11; 143(13):1703-1712. Schott KC, Krusor C, Tinker MT, Moore J, Conrad PA, Shapiro K. PMID: 27573192.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    15. 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. VanWormer E, Carpenter TE, Singh P, Shapiro K, Wallender WW, Conrad PA, Largier JL, Maneta MP, Mazet JA. PMID: 27456911.
      View in: PubMed   Mentions: 11     Fields:    Translation:AnimalsPHPublic Health
    16. California mussels (Mytilus californianus) as sentinels for marine contamination with Sarcocystis neurona. Parasitology. 2016 05; 143(6):762-9. Michaels L, Rejmanek D, Aguilar B, Conrad P, Shapiro K. PMID: 27003262.
      View in: PubMed   Mentions:    Fields:    Translation:AnimalsPHPublic Health
    17. Comparable levels of microbial contamination in soil and on tomato crops after drip irrigation with treated wastewater or potable water. Agriculture Ecosystems & Environment. 2016 Jan 1; 215(Appl. Environ. Microbiol. 77 2011):140-150. Ezra Orlofsky, Nirit Bernstein, Mollie Sacks, Ahuva Vonshak, Maya Benami, Arti Kundu, Michael Maki, Woutrina Smith, Stefan Wuertz, Karen Shapiro, Osnat Gillor. .
      View in: Publisher Site   Mentions:
    18. Detection and characterization of diverse coccidian protozoa shed by California sea lions. Int J Parasitol Parasites Wildl. 2016 Apr; 5(1):5-16. Girard YA, Johnson CK, Fritz HM, Shapiro K, Packham AE, Melli AC, Carlson-Bremer D, Gulland FM, Rejmanek D, Conrad PA. PMID: 27141438.
      View in: PubMed   Mentions:
    19. 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. Shapiro K, Miller MA, Packham AE, Aguilar B, Conrad PA, Vanwormer E, Murray MJ. PMID: 26494610.
      View in: PubMed   Mentions: 3     Fields:    Translation:AnimalsCells
    20. Sarcocystis fayeri in skeletal muscle of horses with neuromuscular disease. Neuromuscul Disord. 2016 Jan; 26(1):85-93. Aleman M, Shapiro K, Sisó S, Williams DC, Rejmanek D, Aguilar B, Conrad PA. PMID: 26522989.
      View in: PubMed   Mentions: 4     Fields:    Translation:AnimalsCells
    21. 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. Krusor C, Smith WA, Tinker MT, Silver M, Conrad PA, Shapiro K. PMID: 26033089.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansAnimalsCells
    22. 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). Davidson MC, Berardi T, Aguilar B, Byrne BA, Shapiro K. PMID: 25764565.
      View in: PubMed   Mentions: 1     Fields:    Translation:AnimalsCells
    23. 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. Shapiro K, VanWormer E, Aguilar B, Conrad PA. PMID: 25367256.
      View in: PubMed   Mentions: 11     Fields:    Translation:HumansAnimalsPHPublic Health
    24. Aquatic polymers can drive pathogen transmission in coastal ecosystems. Proc Biol Sci. 2014 11 22; 281(1795). Shapiro K, Krusor C, Mazzillo FF, Conrad PA, Largier JL, Mazet JA, Silver MW. PMID: 25297861.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    25. 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. Adell AD, Smith WA, Shapiro K, Melli A, Conrad PA. PMID: 25281384.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    26. 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. Berardi T, Shapiro K, Byrne BA, Miller W. PMID: 25314819.
      View in: PubMed   Mentions: 1     Fields:    Translation:AnimalsCellsPHPublic Health
    27. 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. Daniels ME, Hogan J, Smith WA, Oates SC, Miller MA, Hardin D, Shapiro K, Los Huertos M, Conrad PA, Dominik C, Watson FG. PMID: 25016109.
      View in: PubMed   Mentions: 3     Fields:    Translation:AnimalsPHPublic Health
    28. 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. Mazzillo FF, Shapiro K, Silver MW. PMID: 24386100.
      View in: PubMed   Mentions: 7     Fields:    Translation:AnimalsCellsPHPublic Health
    29. 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. Verant ML, d'Ozouville N, Parker PG, Shapiro K, VanWormer E, Deem SL. PMID: 24306552.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansAnimalsCells
    30. 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. Orlofsky E, Gillor O, Melli A, Miller W, Wuertz S, Bernstein N, Shapiro K. PMID: 23911570.
      View in: PubMed   Mentions:    Fields:    Translation:AnimalsCells
    31. 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. Hogan JN, Daniels ME, Watson FG, Oates SC, Miller MA, Conrad PA, Shapiro K, Hardin D, Dominik C, Melli A, Jessup DA, Miller WA. PMID: 23315738.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansAnimalsPHPublic Health
    32. Research commentary: Association of zoonotic pathogens with fresh, estuarine, and marine macroaggregates. Microb Ecol. 2013 May; 65(4):928-33. Shapiro K, Miller WA, Silver MW, Odagiri M, Largier JL, Conrad PA, Mazet JA. PMID: 23250114.
      View in: PubMed   Mentions: 4     Fields:    Translation:AnimalsCellsPHPublic Health
    33. Molecules to modeling: Toxoplasma gondii oocysts at the human-animal-environment interface. Comp Immunol Microbiol Infect Dis. 2013 May; 36(3):217-31. VanWormer E, Fritz H, Shapiro K, Mazet JA, Conrad PA. PMID: 23218130.
      View in: PubMed   Mentions: 30     Fields:    Translation:HumansAnimalsCells
    34. 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. Shapiro K, Miller M, Mazet J. PMID: 22493114.
      View in: PubMed   Mentions: 12     Fields:    Translation:AnimalsPHPublic Health
    35. Association of Toxoplasma gondii oocysts with fresh, estuarine, and marine macroaggregates. Limnology and Oceanography. 2012 Mar 1; 57(2):449-456. Karen Shapiro, Mary W. Silver, John L. Largier, Patricia A. Conrad, Jonna A. K. Mazet. .
      View in: Publisher Site   Mentions:
    36. Climate and coastal habitat change: a recipe for a dirtier ocean. Mar Pollut Bull. 2012 Jun; 64(6):1079-80. Shapiro K. PMID: 22341407.
      View in: PubMed   Mentions: 6     Fields:    Translation:PHPublic Health
    37. Effect of estuarine wetland degradation on transport of Toxoplasma gondii surrogates from land to sea. Appl Environ Microbiol. 2010 Oct; 76(20):6821-8. Shapiro K, Conrad PA, Mazet JA, Wallender WW, Miller WA, Largier JL. PMID: 20802072.
      View in: PubMed   Mentions: 18     Fields:    Translation:HumansAnimalsCellsPHPublic Health
    38. Detection of Toxoplasma gondii oocysts and surrogate microspheres in water using ultrafiltration and capsule filtration. Water Res. 2010 Feb; 44(3):893-903. Shapiro K, Mazet JA, Schriewer A, Wuertz S, Fritz H, Miller WA, Largier J, Conrad PA. PMID: 19836820.
      View in: PubMed   Mentions: 12     Fields:    Translation:AnimalsCells
    39. Surface properties of Toxoplasma gondii oocysts and surrogate microspheres. Appl Environ Microbiol. 2009 Feb; 75(4):1185-91. Shapiro K, Largier J, Mazet JA, Bernt W, Ell JR, Melli AC, Conrad PA. PMID: 19060174.
      View in: PubMed   Mentions: 18     Fields:    Translation:HumansAnimalsCells
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