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 offers a broad range of reference strains from various clinical and environmental sources, including:

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

All ATCC reference strains are produced under ISO 9001:2008 certified and ISO/IEC 17025:2005 accredited processes, ensuring reliability and reproducibility of research data. 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 find strains relevant to your research and applications. 

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.


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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.


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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.


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