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Stephen M Rich MS, PhD

TitleDepartment Head
InstitutionUniversity of Massachusetts Amherst
DepartmentCollege of Natural Sciences
Address209 Fernald Hall
Amherst, MA 01003
Phone4135455225
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    Collapse Bibliographic 
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Milholland MT, Xu G, Rich SM, Machtinger ET, Mullinax JM, Li AY. Pathogen Coinfections Harbored by Adult Ixodes scapularis from White-Tailed Deer Compared with Questing Adults Across Sites in Maryland, USA. Vector Borne Zoonotic Dis. 2020 Dec 14. PMID: 33316206.
      View in: PubMed
    2. Kopsco HL, Xu G, Luo CY, Rich SM, Mather TN. Crowdsourced Photographs as an Effective Method for Large-Scale Passive Tick Surveillance. J Med Entomol. 2020 Aug 19. PMID: 32812635.
      View in: PubMed
    3. Xu G, Wielstra B, Rich SM. Northern and southern blacklegged (deer) ticks are genetically distinct with different histories and Lyme spirochete infection rates. Sci Rep. 2020 Jun 24; 10(1):10289. PMID: 32581236.
      View in: PubMed
    4. Dykstra EA, Oltean HN, Kangiser D, Marsden-Haug N, Rich SM, Xu G, Lee MK, Morshed MG, Graham CB, Eisen RJ. Ecology and Epidemiology of Tickborne Pathogens, Washington, USA, 2011-2016. Emerg Infect Dis. 2020 Apr; 26(4):648-657. PMID: 32187009.
      View in: PubMed
    5. Xu G, Pearson P, Dykstra E, Andrews ES, Rich SM. Human-Biting Ixodes Ticks and Pathogen Prevalence from California, Oregon, and Washington. Vector Borne Zoonotic Dis. 2018 Sep 12. PMID: 30207871.
      View in: PubMed
    6. Xu G, Pearson P, Rich SM. Ehrlichia muris in Ixodes cookei Ticks, Northeastern United States, 2016-2017. Emerg Infect Dis. 2018 Jun; 24(6):1143-1144. PMID: 29774863.
      View in: PubMed
    7. Krause PJ, Schwab J, Narasimhan S, Brancato J, Xu G, Rich SM. Hard Tick Relapsing Fever Caused by Borrelia miyamotoi in a Child. Pediatr Infect Dis J. 2016 Dec; 35(12):1352-1354. PMID: 27626914.
      View in: PubMed
    8. Xu G, Mather TN, Hollingsworth CS, Rich SM. Passive Surveillance of Ixodes scapularis (Say), Their Biting Activity, and Associated Pathogens in Massachusetts. Vector Borne Zoonotic Dis. 2016 Aug; 16(8):520-7. PMID: 27248292.
      View in: PubMed
    9. Elfawal MA, Towler MJ, Reich NG, Weathers PJ, Rich SM. Dried whole-plant Artemisia annua slows evolution of malaria drug resistance and overcomes resistance to artemisinin. Proc Natl Acad Sci U S A. 2015 Jan 20; 112(3):821-6. PMID: 25561559.
      View in: PubMed
    10. Andrade JJ, Xu G, Rich SM. A silicone membrane for in vitro feeding of Ixodes scapularis (Ixodida: Ixodidae). J Med Entomol. 2014 Jul; 51(4):878-9. PMID: 25118423.
      View in: PubMed
    11. Weathers PJ, Elfawal MA, Towler MJ, Acquaah-Mensah GK, Rich SM. Pharmacokinetics of artemisinin delivered by oral consumption of Artemisia annua dried leaves in healthy vs. Plasmodium chabaudi-infected mice. J Ethnopharmacol. 2014 May 14; 153(3):732-6. PMID: 24661969.
      View in: PubMed
    12. Andrews ES, Xu G, Rich SM. Microbial communities within field-collected Culiseta melanura and Coquillettidia perturbans. Med Vet Entomol. 2014 Jun; 28(2):125-32. PMID: 23781871.
      View in: PubMed
    13. Elfawal MA, Towler MJ, Reich NG, Golenbock D, Weathers PJ, Rich SM. Dried whole plant Artemisia annua as an antimalarial therapy. PLoS One. 2012 Dec 20; 7(12):e52746. PMID: 23289055.
      View in: PubMed
    14. Xu G, Wesker J, White C, Campbell J, Reich NG, Rich SM. Detection of heterogeneity of Borrelia burgdorferi in ixodes ticks by culture-dependent and culture-independent methods. J Clin Microbiol. 2013 Feb; 51(2):615-7. PMID: 23175266.
      View in: PubMed
    15. Blanco MB, Elfawal MA, Durden LA, Beati L, Xu G, Godfrey LR, Rich SM. Genetic diversity of ixodid ticks parasitizing eastern mouse and dwarf lemurs in Madagascar, with descriptions of the larva, nymph, and male of Ixodes lemuris (Acari: Ixodidae). J Parasitol. 2013 Feb; 99(1):11-8. PMID: 22924921.
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    16. Rich SM, Xu G. Resolving the phylogeny of malaria parasites. Proc Natl Acad Sci U S A. 2011 Aug 9; 108(32):12973-4. PMID: 21804030.
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    17. Li X, Thomas BN, Rich SM, Ecker D, Tumwine JK, Foulkes AS. Estimating and testing haplotype-trait associations in non-diploid populations. J R Stat Soc Ser C Appl Stat. 2009 Dec; 58(5):663-678. PMID: 20011038.
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    18. Junglen S, Kurth A, Kuehl H, Quan PL, Ellerbrok H, Pauli G, Nitsche A, Nunn C, Rich SM, Lipkin WI, Briese T, Leendertz FH. Examining landscape factors influencing relative distribution of mosquito genera and frequency of virus infection. Ecohealth. 2009 Jun; 6(2):239-49. PMID: 19915916.
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    19. Rich SM, Leendertz FH, Xu G, LeBreton M, Djoko CF, Aminake MN, Takang EE, Diffo JL, Pike BL, Rosenthal BM, Formenty P, Boesch C, Ayala FJ, Wolfe ND. The origin of malignant malaria. Proc Natl Acad Sci U S A. 2009 Sep 1; 106(35):14902-7. PMID: 19666593.
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    20. Walk ST, Xu G, Stull JW, Rich SM. Correlation between tick density and pathogen endemicity, New Hampshire. Emerg Infect Dis. 2009 Apr; 15(4):585-7. PMID: 19331738.
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    21. Li X, Foulkes AS, Yucel RM, Rich SM. An expectation maximization approach to estimate malaria haplotype frequencies in multiply infected children. Stat Appl Genet Mol Biol. 2007; 6:Article33. PMID: 18052916.
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    22. Rich SM. The unpredictable past of Plasmodium vivax revealed in its genome. Proc Natl Acad Sci U S A. 2004 Nov 2; 101(44):15547-8. PMID: 15505201.
      View in: PubMed
    23. Gov Y, Borovok I, Korem M, Singh VK, Jayaswal RK, Wilkinson BJ, Rich SM, Balaban N. Quorum sensing in Staphylococci is regulated via phosphorylation of three conserved histidine residues. J Biol Chem. 2004 Apr 9; 279(15):14665-72. PMID: 14726534.
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    24. Tumwine JK, Kekitiinwa A, Nabukeera N, Akiyoshi DE, Rich SM, Widmer G, Feng X, Tzipori S. Cryptosporidium parvum in children with diarrhea in Mulago Hospital, Kampala, Uganda. Am J Trop Med Hyg. 2003 Jun; 68(6):710-5. PMID: 12887032.
      View in: PubMed
    25. Ferreira MU, Ribeiro WL, Tonon AP, Kawamoto F, Rich SM. Sequence diversity and evolution of the malaria vaccine candidate merozoite surface protein-1 (MSP-1) of Plasmodium falciparum. Gene. 2003 Jan 30; 304:65-75. PMID: 12568716.
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    26. Rich SM, Ayala FJ. Progress in malaria research: the case for phylogenetics. Adv Parasitol. 2003; 54:255-80. PMID: 14711087.
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    27. Mukherjee J, Chios K, Fishwild D, Hudson D, O'Donnell S, Rich SM, Donohue-Rolfe A, Tzipori S. Production and characterization of protective human antibodies against Shiga toxin 1. Infect Immun. 2002 Oct; 70(10):5896-9. PMID: 12228326.
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    28. Burke WD, Malik HS, Rich SM, Eickbush TH. Ancient lineages of non-LTR retrotransposons in the primitive eukaryote, Giardia lamblia. Mol Biol Evol. 2002 May; 19(5):619-30. PMID: 11961096.
      View in: PubMed
    29. Okhuysen PC, Rich SM, Chappell CL, Grimes KA, Widmer G, Feng X, Tzipori S. Infectivity of a Cryptosporidium parvum isolate of cervine origin for healthy adults and interferon-gamma knockout mice. J Infect Dis. 2002 May 1; 185(9):1320-5. PMID: 12001050.
      View in: PubMed
    30. Mukherjee J, Chios K, Fishwild D, Hudson D, O'Donnell S, Rich SM, Donohue-Rolfe A, Tzipori S. Human Stx2-specific monoclonal antibodies prevent systemic complications of Escherichia coli O157:H7 infection. Infect Immun. 2002 Feb; 70(2):612-9. PMID: 11796590.
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    31. Feng X, Rich SM, Tzipori S, Widmer G. Experimental evidence for genetic recombination in the opportunistic pathogen Cryptosporidium parvum. Mol Biochem Parasitol. 2002 Jan; 119(1):55-62. PMID: 11755186.
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    32. Rich SM, Armstrong PM, Smith RD, Telford SR. Lone star tick-infecting borreliae are most closely related to the agent of bovine borreliosis. J Clin Microbiol. 2001 Feb; 39(2):494-7. PMID: 11158095.
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    33. Ayala FJ, Rich SM. Genetic variation and the recent worldwide expansion of Plasmodium falciparum. Gene. 2000 Dec 30; 261(1):161-70. PMID: 11164047.
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    34. Rich SM, Ferreira MU, Ayala FJ. The origin of antigenic diversity in Plasmodium falciparum. Parasitol Today. 2000 Sep; 16(9):390-6. PMID: 10951599.
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    35. Feng X, Rich SM, Akiyoshi D, Tumwine JK, Kekitiinwa A, Nabukeera N, Tzipori S, Widmer G. Extensive polymorphism in Cryptosporidium parvum identified by multilocus microsatellite analysis. Appl Environ Microbiol. 2000 Aug; 66(8):3344-9. PMID: 10919789.
      View in: PubMed
    36. Rich SM, Ayala FJ. Population structure and recent evolution of Plasmodium falciparum. Proc Natl Acad Sci U S A. 2000 Jun 20; 97(13):6994-7001. PMID: 10860962.
      View in: PubMed
    37. Widmer G, Akiyoshi D, Buckholt MA, Feng X, Rich SM, Deary KM, Bowman CA, Xu P, Wang Y, Wang X, Buck GA, Tzipori S. Animal propagation and genomic survey of a genotype 1 isolate of Cryptosporidium parvum. Mol Biochem Parasitol. 2000 May; 108(2):187-97. PMID: 10838221.
      View in: PubMed
    38. Ayala FJ, Escalante AA, Rich SM. Evolution of Plasmodium and the recent origin of the world populations of Plasmodium falciparum. Parassitologia. 1999 Sep; 41(1-3):55-68. PMID: 10697834.
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    39. Rich SM, Ayala FJ. The recent origin of allelic variation in antigenic determinants of Plasmodium falciparum. Genetics. 1998 Sep; 150(1):515-7. PMID: 9841225.
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    40. Rich SM, Licht MC, Hudson RR, Ayala FJ. Malaria's Eve: evidence of a recent population bottleneck throughout the world populations of Plasmodium falciparum. Proc Natl Acad Sci U S A. 1998 Apr 14; 95(8):4425-30. PMID: 9539753.
      View in: PubMed
    41. Rich SM, Hudson RR, Ayala FJ. Plasmodium falciparum antigenic diversity: evidence of clonal population structure. Proc Natl Acad Sci U S A. 1997 Nov 25; 94(24):13040-5. PMID: 9371796.
      View in: PubMed
    42. Rich SM, Rosenthal BM, Telford SR, Spielman A, Hartl DL, Ayala FJ. Heterogeneity of the internal transcribed spacer (ITS-2) region within individual deer ticks. Insect Mol Biol. 1997 May; 6(2):123-9. PMID: 9099576.
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    43. Boyd EF, Hill CW, Rich SM, Hartl DL. Mosaic structure of plasmids from natural populations of Escherichia coli. Genetics. 1996 Jul; 143(3):1091-100. PMID: 8807284.
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    44. Armstrong PM, Rich SM, Smith RD, Hartl DL, Spielman A, Telford SR. A new Borrelia infecting Lone Star ticks. Lancet. 1996 Jan 6; 347(8993):67-8. PMID: 8531586.
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    45. Caporale DA, Rich SM, Spielman A, Telford SR, Kocher TD. Discriminating between Ixodes ticks by means of mitochondrial DNA sequences. Mol Phylogenet Evol. 1995 Dec; 4(4):361-5. PMID: 8747292.
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    46. Rich SM, Caporale DA, Telford SR, Kocher TD, Hartl DL, Spielman A. Distribution of the Ixodes ricinus-like ticks of eastern North America. Proc Natl Acad Sci U S A. 1995 Jul 3; 92(14):6284-8. PMID: 7603983.
      View in: PubMed
    47. Smith RP, Rand PW, Lacombe EH, Telford SR, Rich SM, Piesman J, Spielman A. Norway rats as reservoir hosts for Lyme disease spirochetes on Monhegan Island, Maine. J Infect Dis. 1993 Sep; 168(3):687-91. PMID: 8354910.
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    48. Rand PW, Lacombe EH, Smith RP, Rich SM, Kilpatrick CW, Dragoni CA, Caporale D. Competence of Peromyscus maniculatus (Rodentia: Cricetidae) as a reservoir host for Borrelia burgdorferi (Spirochaetares: Spirochaetaceae) in the wild. J Med Entomol. 1993 May; 30(3):614-8. PMID: 8510121.
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