Sydney Ramirez, M.D., Ph.D., and her team study human immunology, with an emphasis on upper airway immunity and immune memory in the contexts of health and disease. The upper airway serves as an entry point for many infections and environmental insults, and local immune cell populations present in these tissues are poised to play important roles in surveillance and protection. By studying mucosal immunity and how mucosal immune memory is generated and maintained, we can gain a more complete understanding of the body’s complex and multi-layered immune defenses.
Ramirez Lab
Sydney Ramirez, M.D., Ph.D.
Research Assistant Professor
Center for Autoimmunity and InflammationCenter for Vaccine Innovation
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The myriad roles of the immune system in maintaining health continue to be illuminated, highlighting the importance of studying human immunology. Innovative tools and technologies have expanded our ability to study even rare immune cell populations present in limited clinical samples. These advances will be key for the development of novel diagnostic and therapeutic interventions to promote immune health and combat disease.
Featured Publications
Rydyznski Moderbacher C, Ramirez SI, Dan JM, Grifoni A, Hastie KM, Weiskopf D, Belanger S, Abbott RK, Kim C, Choi J, Kato Y, Crotty EG, Kim C, Rawlings SA, Mateus J, Tse LPV, Frazier A, Baric R, Peters B, Greenbaum J, Ollmann Saphire E, Smith DM, Sette A, Crotty S
Grifoni, A., Weiskopf, D., Ramirez, S.I., Mateus, J., Dan, J.M., Moderbacher, C.R., Rawlings, S.A., Sutherland, A., Premkumar, L., Jadi, R.S., Marrama, D., de Silva, A.M., Frazier, A., Carlin, A., Greenbaum, J.A., Peters, B., Krammer, F., Smith, D.M., Crotty, S., Sette, A.,
Jan 1, 2025
- Nature
Ramirez SI, Faraji F, Hills LB, Lopez PG, Goodwin B, Stacey HD, Sutton HJ, Hastie KM, Saphire EO, Kim HJ, Mashoof S, Yan CH, DeConde AS, Levi G, Crotty S
Stacey HD, Garin-Ortega L, Lopez PG, Ramezani-Rad P, Ramierz SI, Faraji F, Bhavsar D, Levi G, Krammer F, Crotty S
Lab Members
Sydney Ramirez, M.D./Ph.D.
Research Assistant Professor
From the Lab
After spearheading critical COVID-19 research, Ramirez developed a new way to study how the body defends itself
- Research News
LJI scientists pioneer new method for measuring immune memory and SARS-CoV-2 responses in the upper airway
- Institute News
Ramirez brings a doctor's perspective to infectious disease research
Awards & Honors
NIH NIAID K08 Mentored Clinical Scientist Research Career Development Award (2026-)STAT Wunderkind (2025)Burroughs Wellcome Fund Career Award for Medical Scientists (2024-)A.P. Giannini Postdoctoral Research Fellowship and Leadership Award (2021-2024)
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