Mariana Carmen CHIFIRIUC began her research career in 1997 at the National Institute for R&D in Microbiology and Immunology “I. Cantacuzino”, Romania. She received fellowships from the International Network of Pasteur Institutes and Associates (Bangui—1999, Paris—2000). In 2005 she was awarded a PhD for the thesis “Host-parasite relationship. Opportunistic infections in HIV-infected patients”. From 2001 to 2009, she was the National Data Manager for Romania in the European Antimicrobial Surveillance System. She is a Professor of Microbiology and Immunology at the University of Bucharest Faculty of Biology and coordinates one division of the ICUB research center. Her interest is in the investigation of the clinical/environmental reservoir of virulence and AR by phenotypic and genotypic tools, the investigation of host–pathogen crosstalk during the infection process, and the assessment of the antimicrobial activity of novel nanomaterials. She has published more than 300 papers, 14 books, more than 30 book chapters, 13 patents, and 1 microarray dataset submission in the GEO repository.