Nikolina Walas, PhD, MPH

Photo of Nikolina Walas, PhD, MPH
Title(s)Postdoctoral Scholar, Proctor Foundation
SchoolChancellor/EVC/FAS
Address95 Kirkham Street, #218
San Francisco CA 94122
ORCID ORCID Icon0000-0002-6137-9275 Additional info
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    Collapse Biography 
    Collapse education and training
    University of California, Berkeley, BerkeleyPhD05/2025Environmental Health Sciences
    University of California, Berkeley, BerkeleyMPH05/2022Infectious Diseases and Vaccinology
    University of California, Los Angeles, Los AngelesBS06/2018Microbiology, Immunology, and Molecular Genetics

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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. to make corrections and additions.
    Newest   |   Oldest   |   Most Cited   |   Most Discussed   |   Timeline   |   Field Summary   |   Plain Text
    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. Serologic Assessment of Public Health Action Needed for Trachoma, Coastal Ecuador, 2021-2024. Emerg Infect Dis. 2026 Oct 02; 32(11). Kamau E, Simbaña L, Torres S, Walas N, Cooley G, Coleman C, Goodhew EB, Martin DL, Burroughs H, Calvopiña M, Cevallos W, Vivero S, Nipaz V, Coloma J, Lee GO, Trueba G, Eisenberg JNS, Levy K, Arnold BF. PMID: 42826349.
      View in: PubMed   Mentions:
    2. Reconstructing pathogen-specific antibody binding epitopes and age-dependent immune signatures from proteomic-scale peptide libraries. Sci Adv. 2026 Aug 21; 12(34):eaec5478. Kamau E, Walas N, Zhang M, Kamath K, Reifert J, Shon J, Ali S, Rahman MZ, Shoab AK, Famida SL, Akther S, Hossen MS, Mutsuddi P, Rahman M, Grembi JA, Mertens AN, Charles RC, Leung DT, Luby S, Lin A, Arnold BF. PMID: 42616861; PMCID: PMC13488894.
      View in: PubMed   Mentions:
    3. Effects of improved water, sanitation, handwashing, and nutrition on early childhood IgG immune repertoire development against Shigella and enteroinvasive Escherichia coli (EIEC). mSphere. 2026 Aug 26; 11(8):e0033926. Walas N, Kamau E, Zhang M, Kamath K, Reifert J, Shon J, Ali S, Rahman MZ, Shoab AK, Famida SL, Akther S, Hossen MS, Mutsuddi P, Rahman M, Grembi JA, Mertens AN, Bhuiyan TR, Qadri F, Ryan ET, Charles RC, Leung D, Luby S, Lin A, Arnold BF. PMID: 42454929; PMCID: PMC13508797.
      View in: PubMed   Mentions:    Fields:    
    4. Antimicrobial Resistance Gene Profiles in Integron-Positive and Integron-Negative Third-Generation Cephalosporin-Resistant E. coli from Human and Animal Sources. Antibiotics (Basel). 2026 Apr 24; 15(5). Ho T, Salinas L, Trueba G, Amato HK, Walas N, Pandya M, Johnson T, Graham J. PMID: 42192649; PMCID: PMC13203075.
      View in: PubMed   Mentions:
    5. Integrated serosurveillance to assess disease elimination in coastal Ecuador: onchocerciasis, yaws, and trachoma. medRxiv. 2026 Feb 19. Simbaña Vivanco L, Torres Ayala S, Walas N, Cooley G, Coleman C, Goodhew EB, Martin DL, Burroughs H, Kamau E, Calvopiña M, Cevallos W, Coloma J, Lee GO, Trueba G, Eisenberg JNS, Levy K, Arnold BF. PMID: 41757197; PMCID: PMC12934873.
      View in: PubMed   Mentions:
    6. Use of serology to assess the probability of public health action needed for trachoma in coastal Ecuador. medRxiv. 2026 Feb 19. Kamau E, Simbaña Vivanco L, Torres Ayala S, Walas N, Cooley G, Coleman C, Goodhew EB, Martin DL, Burroughs H, Calvopiña M, Cevallos W, Vivero S, Nipaz V, Coloma J, Lee GO, Trueba G, Eisenberg JNS, Levy K, Arnold BF. PMID: 41757217; PMCID: PMC12934857.
      View in: PubMed   Mentions:
    7. Diverse Reservoirs of Third-Generation Cephalosporin-Resistant Escherichia coli in Guatemala. Ecohealth. 2026 06; 23(2):223-232. Perez-Garcia G, Alvarez D, Barillas AG, Mendizabal-Cabrera R, Ramay BM, Ho T, Walas N, Graham JP. PMID: 41577943; PMCID: PMC13287249.
      View in: PubMed   Mentions:    Fields:    Translation:HumansAnimalsCells
    8. Effects of improved water, sanitation, handwashing and nutrition on early childhood IgG immune repertoire development against Shigella and enteroinvasive Escherichia coli (EIEC). medRxiv. 2025 Nov 22. Walas N, Kamau E, Zhang M, Kamath K, Reifert J, Shon J, Ali S, Rahman MZ, Shoab AK, Famida SL, Akther S, Hossen MS, Mutsuddi P, Rahman M, Mertens AN, Charles R, Leung D, Luby S, Lin A, Arnold BF. PMID: 41332872; PMCID: PMC12668103.
      View in: PubMed   Mentions:
    9. Reconstructing pathogen-specific antibody binding epitopes and age-dependent immune signatures from proteomic-scale peptide libraries. medRxiv. 2025 Sep 22. Kamau E, Walas N, Zhang M, Kamath K, Reifert J, Shon J, Ali S, Rahman MZ, Shoab AK, Famida SL, Akther S, Hossen MS, Mutsuddi P, Rahman M, Mertens AN, Charles RC, Leung DT, Luby S, Lin A, Arnold BF. PMID: 41040718; PMCID: PMC12486044.
      View in: PubMed   Mentions:
    10. Multiplex PCR Detection of Enteric Pathogens in a Community-based Birth Cohort in Ecuador: Comparison of xTAG-GPP and TaqMan Array Card Assays. Open Forum Infect Dis. 2025 Feb; 12(2):ofaf027. Ayala ST, Simbaña Vivanco L, Walas N, Jesser K, Zhou NA, Fagnant-Sperati CS, Burroughs HR, Lee GO, Eisenberg JNS, Trueba G, Levy K, Arnold BF. PMID: 39917334; PMCID: PMC11800474.
      View in: PubMed   Mentions: 1  
    11. Lack of wastewater treatment in a small town drives the spread of ESBL-producing Escherichia coli in irrigation waters. J Environ Qual. 2024 Nov-Dec; 53(6):1116-1126. VanderYacht T, Salinas L, Remerleitch T, Walas N, Ho T, Trueba G, Graham JP. PMID: 39428701.
      View in: PubMed   Mentions:    Fields:    Translation:CellsPHPublic Health
    12. Multiplex PCR detection of enteric pathogens in a community-based birth cohort in Ecuador: comparison of xTAG-GPP and TaqMan array card assays. medRxiv. 2024 Oct 18. Ayala ST, Vivanco LS, Walas N, Jesser K, Zhou NA, Fagnant-Sperati CS, Burroughs HR, Lee GO, Eisenberg JNS, Trueba G, Levy K, Arnold BF. PMID: 39417121; PMCID: PMC11482970.
      View in: PubMed   Mentions:
    13. Analysis of Antibiotic Resistance Genes (ARGs) across Diverse Bacterial Species in Shrimp Aquaculture. Antibiotics (Basel). 2024 Aug 30; 13(9). Mitchell TM, Ho T, Salinas L, VanderYacht T, Walas N, Trueba G, Graham JP. PMID: 39334999; PMCID: PMC11429446.
      View in: PubMed   Mentions: 3  
    14. Application of phylodynamics to identify spread of antimicrobial-resistant Escherichia coli between humans and canines in an urban environment. Sci Total Environ. 2024 Mar 15; 916:170139. Walas N, Müller NF, Parker E, Henderson A, Capone D, Brown J, Barker T, Graham JP. PMID: 38242459.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansAnimalsCells
    15. Phylodynamics Uncovers the Transmission of Antibiotic-Resistant Escherichia coli between Canines and Humans in an Urban Environment. bioRxiv. 2023 Jun 01. Walas N, Müller NF, Parker E, Henderson A, Capone D, Brown J, Barker T, Graham JP. PMID: 37398411; PMCID: PMC10312604.
      View in: PubMed   Mentions: 1  
    16. The role of plasmids in carbapenem resistant E. coli in Alameda County, California. BMC Microbiol. 2023 05 22; 23(1):147. Walas N, Slown S, Amato HK, Lloyd T, Bender M, Varghese V, Pandori M, Graham JP. PMID: 37217873; PMCID: PMC10201492.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansCells
    17. Clonal Lineages and Virulence Factors of Carbapenem Resistant E. coli in Alameda County, California, 2017-2019. Antibiotics (Basel). 2022 Dec 10; 11(12). Slown S, Walas N, Amato HK, Lloyd T, Varghese V, Bender M, Pandori M, Graham J. PMID: 36551451; PMCID: PMC9774732.
      View in: PubMed   Mentions: 7  
    18. Genome Sequences of Cluster K Mycobacteriophages Deby, LaterM, LilPharaoh, Paola, SgtBeansprout, and Sulley. Microbiol Resour Announc. 2019 Jan; 8(2). Gaballa JM, Dabrian K, Desai R, Ngo R, Park D, Sakaji E, Sun Y, Tan B, Brinck M, Brobst O, Fernando R, Kim H, McCarthy S, Murphy M, Sarkis A, Sevier P, Singh A, Wu D, Wu MY, Ennis HA, Luhar R, Miller JE, Orchanian SB, Salbato AN, Alam S, Brenner L, Kailani Z, Laskow J, Ma X, Miikeda A, Nol-Bernardino P, Sukhina A, Walas N, Wei W, Do NP, Fournier CT, Kim CJ, Mosier SF, Pierson C, Romero IG, Sanchez M, Sawyerr O, Wang J, Watanabe R, Wu S, Chen A, Kazane K, Kettoola Y, Goodwin EC, Lund AJ, Villella W, Williams D, Freise A, Moberg Parker J. PMID: 30643892; PMCID: PMC6328665.
      View in: PubMed   Mentions: 3  
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