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Sewage and the Science of Public Health – Dr. Shu-Yuan Cheng and Dr. Marta Concheiro-Guisan Track Wastewater Contaminants
Wastewater is a topic that the average New Yorker doesn’t think about often, but perhaps we should. Sewage and run-off, over a billion gallons of which are treated every single day in New York City by 14 wastewater resource recovery facilities, are a valuable resource for scientists.
Wastewater sampling has been a useful tool for public health researchers tracking the COVID-19 pandemic over the last two years. The Centers for Disease Control (CDC) launched the National Wastewater Surveillance System in September 2020 as a means of tracking virus spread and community prevalence. Viral genetic material is transmitted in fecal matter to the sewers and waste treatment plants, where researchers can take samples. Their work can serve as an early warning of community spread, track variants, and inform public health strategies for responding to the virus. Even better, wastewater surveillance doesn’t require individuals to seek out healthcare in order to capture information, meaning that the resulting data can include people who may be asymptomatic, who have taken home tests, or who have not been tested at all.
Wastewater data have figured prominently in several interesting COVID-19 stories recently in the news. In January 2022 the CDC reported that mutations associated with the Omicron variant showed up in New York City wastewater in November 2021, before the variant was officially reported in South Africa and at least a week before the first U.S. case was identified via clinical testing, suggesting that Omicron was likely circulating in communities before cases could be officially confirmed. And The New York Times recently reported on mysterious fragments of viral RNA with novel mutations detected in NYC wastewater, which are stumping researchers. They haven’t been able to pin down where these fragments are coming from, nor why these mutations have not shown up in clinical testing of human or animal populations in the city.
Two John Jay College researchers, Dr. Shu-Yuan Cheng and Dr. Marta Concheiro-Guisan, are also big proponents of wastewater sampling studies as a public health tool. Their own research, published in 2019, tracked drug use over one year in New York City, using one-time grab samples to test for levels of cocaine, nicotine, cannabis, opioids, and amphetamines in the sewage. Now, the scientists are collaborating with non-profits that test the health of the city’s waterways, trying to correlate levels of pharmaceuticals in our rivers with the amount of harmful bacteria.
To Dr. Cheng and Dr. Concheiro-Guisan, wastewater analysis’s great strength lies in early warning and early intervention. “It’s a great tool for prediction, for public health, crime fighting, and disease [prevention] purposes,” says Dr. Cheng. “The official report is often too late, but if you can do an early intervention, find the issue and start addressing it, there’s a lot you can do.”
“We looked at wastewater because we saw the utility,” says Dr. Concheiro-Guisan. “This is a different application [than viral tracking] but with the same thought: that what we eliminate from our bodies tells you a lot about your population.”
However, the United States is late to the game. Though the CDC has had results with its national COVID-19 tracking program, both researchers lament the lack of a centralized American body to apply this research to other public health applications. They’d like to see the U.S. follow the example set in European countries, China, Australia, and increasingly in South America, where governments have applied wastewater sampling to create campaigns warning their citizens about novel psychoactives, catch drug manufacturers, and more.
“It’s a very important public health tool that is showing results,” says Dr. Concheiro-Guisan. “If you start in the biggest city in the country, if you start in New York, then others will follow.”
Dr. Shu-Yuan Cheng is an Associate Professor and Chair of John Jay’s Department of Sciences. Her research is in the areas of toxicology and forensic pharmacology, including the roles that environmental toxins play in neurodegenerative diseases, identifying the target genes and signaling pathways affected by environmental toxins, and investigating pharmacological mechanisms of anti-cancer medications.
Dr. Marta Concheiro-Guisan is Assistant Professor of Forensic Toxicology in John Jay’s Department of Sciences. Her research focuses on the development and validation of analytical methods by gas and liquid chromatography tandem mass spectrometry and their application to different specimens, the detection of drug exposure during pregnancy, and the toxicological study of new psychoactive substances.
Fostering Success in STEM – Dr. Edgardo Sanabria-Valentín
Dr. Edgardo Sanabria-Valentín sees himself in the PRISM students he works with. He credits his alma mater, the University of Puerto Rico, with instilling in him the spirit of preparedness that he brings to student researchers and presenters at John Jay — being ready not only with the technical facts but with the message about why your research is important, and how you are changing the world.
“Because of that, every time we go to a conference, we get minimum one award — my top is three!” he says. “Every time we go to an undergraduate research conference, John Jay’s name always comes up.” It is this tangible commitment to bringing out the best in John Jay’s science students that earned Dr. Sanabria-Valentín, who is the Associate Director of the John Jay Program for Research Initiatives in Science and Math (PRISM), a 2018 APACS President’s Award.
At its heart, PRISM is about teaching students skills, not only in the sciences but also to prepare them to succeed in and after college. “The bread and butter upon which PRISM was founded” is the Undergraduate Research Program. The program provides students with opportunities to be exposed to the process of science beyond their normal classroom studies by working directly with a faculty mentor on an original STEM research project.
And PRISM has grown. A second component is the Junior Scholars program, giving academic support to eligible students that can include stipends, professional development events and supplementary advisement, as well as financial support in applying to post-graduate programs in New York State-licensed professions. Just as important for an institution that counts many first-generation college students among its student body, Junior Scholars collaborates with student support services across the college, like the Math and Sciences Research Center, Center for Career and Professional Development, Wellness Center, Center for Postgraduate Opportunities, and even more. The program is designed to make sure that students have all the tools to get to know their college and excel.
External funding is part of what drives PRISM’s growth. The New York State Collegiate Science and Technology Entry Program, or CSTEP, awards grants to postsecondary and professional schools to start academic support programs — like PRISM — for students from underrepresented minority groups, or who are economically disadvantaged, to help them get into STEM fields. John Jay was among the first class of schools to receive CSTEP funding, thirty years ago and out of roughly 200 PRISM students, the CSTEP grant supports 140. Edgardo’s goal is to double that number over the next five years.
His hard work is a large part of why the CSTEP program is at John Jay — after a short hiatus, Edgardo’s application brought the program back in 2015 — and of John Jay’s unique status as the only school to have institutionalized this type of academic STEM-focused support initiative. He is also responsible for collaborating with other CSTEP schools in the region: NYU, Hostos Community College, Fordham, City College and Mt. Sinai are among the Manhattan and Bronx institutions that participate with John Jay in our CSTEP Regional Research Expos. Participating students are invited to present their own research in poster sessions and attend professional development activities.
His work on and logistical support for the expos has earned Edgardo an award from the President of the Association of Program Administrators for CSTEP and STEP (APACS). The honor also recognizes his success in running a program that benefits students in the sciences. The advisement services offered by PRISM have created the conditions for increased student success at John Jay and degree completion, and the program puts students on a path toward the pursuit of higher degrees, or toward a place in the workforce in a variety of science, technology and computer science fields. The Undergraduate Research Program has measurably helped students to pursue post-graduate degrees in science, medicine and more.
The bottom line for Edgardo, though, is his students. “My kids blow me away every time,” he gushes. “I have complete pride in showing them off at every conference I go to. I have learned so much by helping them with posters and advising on their projects; it’s encouraging that I sometimes find my students to be smarter than me.”
Learn more about:
PRISM: http://prismatjjay.org/
APACS: http://www.apacs.org/
CSTEP in New York State: http://www.highered.nysed.gov/kiap/colldev/CollegiateScienceandTechnologyEntryProgram.htm
Edgardo Sanabria-Valentín, Ph.D. is the Associate Program Director for PRISM and also the Pre-Health Careers Advisor at John Jay. He holds a Ph.D. from NYU-School of Medicine, where his dissertation work involved studying the mechanisms Helicobacter pylori employs to persist in the human stomach for the life span of each host. He came to John Jay after a Post-Doctoral Fellowship at Harvard Medical School followed by 3 years working in the Biotechnology Industry in Boston. Dr. Sanabria-Valentín is the recipient of the ESCMID Young Scientist Award (2007), a Leadership Alliance-Schering Plough Graduate Fellowship (2006), and the NBHS-Frank G. Brooks Award for Excellence in Student Research (2001). He is also a founding member of the NYC-Minority Graduate Student Network and The Leadership Alliance Alumni Association.
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