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Suhana Chattopadhyay

Post-Doctoral Fellow, Program Manager, UMD Global STEWARDS NSF NRT Program

Suhana Chattopadhyay, PhD, is a Post-doctoral fellow at the Department of Global, Environmental, and Occupational Health. She is serves as the Program Manager of the Global STEWARDS National Science Foundation NRT program and Global FEWture Alliance Grand Challenges Program. She is also a researcher with the CONSERVE Center of Excellence, funded by USDA-NIFA which investigates transformative on‐farm treatment solutions that enable the safe use of nontraditional irrigation water, and the Maryland Safe Drinking WATER Study which characterizes the drinking water quality in Maryland's underserved communities.


SPH Building, Room 2234Q


Areas of Interest

Core Faculty

Environmental Microbiology, Global Health, Tobacco Microbiome, Food Safety.

  • PhD, Environmental Health Sciences, University of Maryland, School of Public Health
  • Global Health Graduate Certificate, University of Maryland, School of Public Health
  • MS, Ecology
  • MS, Botany

Taught as Instructor:

  • MIEH 690 - UMD Global STEWARDS: Experiential Exploration of Innovations at the Nexus of Food, Energy, and Water Systems (INFEWS) (Spring 2024)
  • MIEH 699 - UMD Global STEWARDS: Seminal Findings, and Research and Policy in Progress at the Food, Energy, Water Nexus (Spring 2023, Fall 2023)
  • MIEH 690 - UMD Global STEWARDS: Experiential Exploration of Innovations at the Nexus of Food, Energy, and Water Systems (INFEWS) (Spring 2023), co-taught with Dr. Amy Sapkota

Taught as Teaching Assistant:

  • MIEH 400 – Introduction to Global Health
  • MIEH 300 – Introduction to Environmental Health
  • UMD Global STEWARDS Fellow 2021-2022 (NSF National Research Traineeship Program)
  • University of Maryland School of Public Health Dean’s Fellowship (2020- 2022)
  • University of Maryland Graduate Student Summer Research Fellowship (2021)
  • University of Maryland School of Public Health Wait Family Endowed Environmental Graduate Scholarship, UMD (2021)
  • Faculty-Student Research Award, UMD Graduate School (2021-2022)
  • Inducted into the Delta Omega Honorary Society in Public Health, University of Maryland (2022)
  • Michael J. Pelczar Award for Excellence in Graduate Study, UMD Graduate School (2022)
  • Dean’s Scholar Award, School of Public Health, UMD (2022)
  1. Chattopadhyay S, Malayil L, Kaukab S, Merenstein Z, Sapkota AR.The predisposition of smokers to COVID-19 infection: A mini-review of global perspectives. Heliyon (2023) 9, e17783, doi:
  2. Zhu L, Chattopadhyay S, Akanbi OE, Lobo S, Panthi S, Craddock H, Allard S, Sapkota AR, Chiu PC, Sapkota A.  Biochar and zero-valent iron-based sand filtration simultaneously remove organic micropollutants and Escherichia coli from wastewater effluent. Biochar (2023), 5(1), 41.  
  3. Chattopadhyay S, Ramachandran P, Malayil L, Mongodin EF, Sapkota AR. Conventional tobacco products harbor unique but heterogenous microbiomes. Environmental Research. (2023) 115205. 
  4. Malayil L, Ramachandran P, Chattopadhyay S, Allard, S. M., Bui, A., Butron, J., Callahan, M. T., Craddock, H. A., Murray, R., East, C., Sharma, M., Kniel, K., Micallef, S., Hashem, F., Gerba, C. P., Ravishankar, S., Parveen, S.,May, E., Handy, E., Kulkarni, P., Anderson-Coughlin, B., Craighead, S., Gartley, S., Vanore, A., Duncan, R., Foust,D., Haymaker, J., Betancourt, W., Zhu, L., Mongodin, E. F., Sapkota, A., Pop, M., Sapkota AR. Variations in bacterial diversity and antibiotic resistance genes across diverse recycled irrigation water sources in the mid-Atlantic and southwest United States: A CONSERVE two-year field study. Environmental Science and Technology. (2022) 56 (21), 15019-15033. doi: 10.1021/acs.est.2c02281
  5. Malayil L, Chattopadhyay S, Mongodin EF, Sapkota AR. Bacterial communities of hookah tobacco products are diverse and differ across brands and flavors. Appl Microbiol Biotechnol. (2022) Sep;106(17):5785-5795. doi: 10.1007/s00253-022-12079-7
  6. Morgado M, Hudson CL, Chattopadhyay S, Ta K, East C, Lower A, Purser N, Allard S, Drew Ferrier M, Sapkota AR, Sharma M, Rosenberg Goldstein R. The effect of a first-flush rainwater harvesting irrigation system on E. coli and pathogen concentrations in irrigation water, soil, and produce. Sci Total Environ. 2022 Jun 26:156976. doi: 10.1016/j.scitotenv.2022.156976.  
  7. Malayil L*, Chattopadhyay S*, Bui A, Panse M, Cagle R, Mongodin EF, Sapkota AR. Viable tobacco-associated bacteria are aerosolized in mainstream cigarette smoke. Environmental Research 113462. 
  8. Chattopadhyay S, Malayil L, Mongodin EF, Sapkota AR. Nicotine Concentration and mentholation affect the bacterial community diversity in SPECTRUM research cigarettes. Appl Microbiol Biotechnol. (2021) 105(10):4241-4253. 
  9. Malayil L, Chattopadhyay S, Mongodin EF, Sapkota AR. Coupled DNA-labeling and sequencing approach enables the detection of viable-but-non-culturable Vibrio spp. in irrigation water sources in the Chesapeake Bay watershed. Environmental Microbiome 1613 (2021).
  10. Chattopadhyay S*, Malayil L*, Mongodin EF, Sapkota AR. A roadmap from unknowns to knowns: Advancing our understanding of the microbiomes of commercially available tobacco products. Appl Microbiol Biotechnol. (2021) 105(7):2633-2645. doi: 10.1007/s00253-021-11183-4
  11. Chattopadhyay S*, Arnold JD*, Malayil L, Hittle L, Mongodin EF, Marathe KS, Gomez-Lobo V, Sapkota AR. Potential role of the skin and gut microbiota in premenarchal vulvar lichen sclerosus: A pilot case-control study. PLoS One. (2021) 16(1): e0245243. doi: 10.1371/journal.pone.0245243. * Denotes shared first authorship. 
  12. Malayil L, Ramachandran P, Chattopadhyay S, Cagle R, Hittle L, Ottesen A, Mongodin EF, Sapkota AR. Metabolically-active bacteria in reclaimed water and ponds revealed using bromodeoxyuridine DNA labeling coupled with 16S rRNA and shotgun sequencing. Water Res. (2020) 184: 116185. doi: 10.1016/j.watres.2020.116185. 
  13. Craddock HA, Chattopadhyay S, Rjoub Y, Rosen D, Greif J, Lipchin C, Mongodin EF, Sapkota AR. Antibiotic-resistant Escherichia coli and Klebsiella spp. in greywater reuse systems and pond water used for agricultural irrigation in the West Bank, Palestinian Territories. Environ Res. (2020) 188:109777. doi: 10.1016/j.envres.2020.109777.  
  14. Malayil L, Chattopadhyay S, Kulkarni P, Hittle L, Clark PI, Mongodin EF, Sapkota AR. Mentholation triggers brand-specific shifts in the bacterial microbiota of commercial cigarette products. Appl Microbiol Biotechnol. (2020) 104(14):6287-6297. doi: 10.1007/s00253-020-10681-1. 
  15. Chopyk J, Nasko DJ, Allard S, Callahan MT, Bui A, Ferelli AMC, Chattopadhyay S, Mongodin EF, Pop M, Micallef SA, Sapkota AR. Metagenomic analysis of bacterial and viral assemblages from a freshwater creek and irrigated field reveals temporal and spatial dynamics. Sci Total Environ. (2020) 1;706:135395. doi: 10.1016/j.scitotenv.2019.135395. 
  16. Smyth EM, Chattopadhyay S, Babik K, Reid M, Chopyk J, Malayil L, Kulkarni P, Hittle LE, Clark PI, Sapkota AR, Mongodin EF. The Bacterial Communities of Little Cigars and Cigarillos Are Dynamic Over Time and Varying Storage Conditions. Front Microbiol. (2019) 10:2371. doi: 10.3389/fmicb.2019.02371. 
  17. Chattopadhyay S, Smyth EM, Kulkarni P, Babik KR, Reid M, Hittle LE, Clark PI, Mongodin EF, Sapkota AR. Little cigars and cigarillos harbor diverse bacterial communities that differ between the tobacco and the wrapper. PLoS One. (2019) 14(2):e0211705. doi: 10.1371/journal.pone.0211705. 
  18. Allard SM, Callahan MT, Bui A, Ferelli AMC, Chopyk J, Chattopadhyay S, Mongodin EF, Micallef SA, Sapkota AR. Creek to Table: Tracking fecal indicator bacteria, bacterial pathogens, and total bacterial communities from irrigation water to kale and radish crops. Sci Total Environ. (2019) 20;666:461-471. doi: 10.1016/j.scitotenv.2019.02.179. 
  19. Chopyk J*, Chattopadhyay S*, Kulkarni P, Smyth EM, Hittle LE, Paulson JN, Pop M, Buehler SS, Clark PI, Mongodin EF, Sapkota AR. Temporal Variations in Cigarette Tobacco Bacterial Community Composition and Tobacco-Specific Nitrosamine Content Are Influenced by Brand and Storage Conditions. Front Microbiol. (2017) 8:358. doi: 10.3389/fmicb.2017.00358. 
  20. Chopyk J, Chattopadhyay S, Kulkarni P, Claye E, Babik KR, Reid MC, Smyth EM, Hittle LE, Paulson JN, Cruz-Cano R, Pop M, Buehler SS, Clark PI, Sapkota AR, Mongodin EF. Mentholation affects the cigarette microbiota by selecting for bacteria resistant to harsh environmental conditions and selecting against potential bacterial pathogens. Microbiome. (2017) 15;5(1):22. doi: 10.1186/s40168-017-0235-0.