Multidrug-Resistant Reference Strains

Multidrug-resistance (MDR) among infectious microorganisms is a serious health concern that has contributed to increases in morbidity, mortality, and expense in healthcare settings. To support the field of MDR research, ATCC has acquired and authenticated various clinical and environmental isolates exhibiting resistance to numerous antimicrobial agents.



Multidrug-Resistant Microbial Strains

In the last two decades, multidrug-resistant (MDR) strains have been attributed to numerous infections worldwide. Regrettably, current treatment for these infections is severely limited, thus necessitating the development of novel prevention methods and therapeutics.


ATCC understands the danger and growing concern behind the spread of MDR strains. To aid in the prevention and treatment of MDR-associated infections, ATCC has acquired and authenticated various clinical and environmental strains, including:

  • Methicillin-resistant Staphylococcus aureus
  • Vancomycin-resistant Enterococci
  • Carbapenem-resistant Enterobacteriaceae
  • Extended-spectrum β-lactamase strains
  • Drug-resistant Candida albicans
  • Drug-resistant parasitic protozoa

These strains are ideal for the development, verification, and evaluation of rapid detection methods, innovative therapeutic techniques, novel antibiotics, and updated sterility protocols.


Check out the resources below to learn more.

Drug-Resistant Bacteria

The ATCC Bacteriology collection offers a wide array of clinically-relevant MDR strains isolated from a variety of hospital- and community-acquired sources. These cultures are useful for studying the genetic variations between strain types, the in vitro evaluation of disinfectants and novel antibiotics, and establishing the performance characteristics of molecular-based assays.


Find strains

Related Items:

Drug-Resistant Yeast & Fungi

The ATCC Mycology collection offers a number of fungal strains that demonstrate varied levels of resistance to common antifungals, including anidulafungin, micafungin, caspofungin, 5-flucytosine, voriconazole, itraconazole, and fluconazole. These strains were isolated from clinical settings around the world and are useful in assay development, drug testing, and other applications.


Find strains

Related Items:

Drug-Resistant Protozoa

The ATCC Protistology collection offers a variety of drug-resistant parasitic protozoa, including vector-borne parasites isolated from either existing strains or clinical settings. These strains are useful in the evaluation of novel anti-parasitic therapies, assay development, and other applications.


Find strains