At BEI Resources, we're the leading source for high quality cultures and reagents for microbiology and infectious diseases research. As you explore the benefits we offer, you will see how BEI Resources can serve as a catalyst for your research efforts worldwide.  BEI Resources materials are provided at no cost to registered researchers (additional shipping charges may apply).

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Monkeypox virus (MPXV), scientifically classified as Orthopoxvirus monkeypox, is a double-stranded enveloped DNA virus and a member of the Orthopoxvirus genus of the Poxviridae family. MPXV is divided into two distinct genetic clades: clade I, previously referred to as the Congo Basin or Central African clade, which includes sub-clades Ia and Ib; and clade II, formerly known as the West African clade, comprising sub-clades IIa and IIb.

Trypanosoma cruzi is the causative agent of Chagas disease, a major public health problem in Latin America and an emergent disease in the US. There is no vaccine available, and drugs are limited with severe side effects. Efforts to generate new therapies are affected by limitations in the understanding of parasite biology and disease pathogenesis.

Candida auris is an emerging multidrug-resistant pathogenic yeast that causes invasive infections and outbreaks in nosocomial settings, resulting in high mortality. First identified in 2009, this pathogen has now been isolated in over sixty countries across six continents. Unlike other Candida species, C. auris demonstrates a unique ability to colonize the skin, persist on surfaces for prolonged periods, and spread efficiently within healthcare facilities.

Talaromyces marneffei (previously known as Penicillium marneffei) causes talaromycosis, a globally significant, endemic fungal infection that is fatal if left untreated in disseminated infections. The disease primarily affects immunocompromised individuals, especially those living with HIV/AIDS in Southeast Asia, Southern China, and Northeast India.

BEI Resources is excited to announce the release of a comprehensive single-gene deletion library of Streptococcus agalactiae strain A909 (Group B Streptococcus). This resource consists of individual mutants generated via transposon insertions, arrayed in a convenient 96-well plate format for high-throughput screening.

A multistate measles outbreak began in January 2025, primarily affecting close-knit communities with low vaccination coverage in New Mexico, Oklahoma, and Texas. As of November 21, 1,753 measles cases had been reported in the United States in 2025. Of these, 87% (1,530 cases) are associated with the ongoing outbreak. This represents an approximately 540% increase compared to the 285 cases reported in all of 2024.1,2

Due to its physiological similarity to humans, the golden Syrian hamster (Mesocricetus auratus) has long been used to model cardiovascular pathology, metabolic diseases, cancer, and infectious diseases in the laboratory. Hamsters have been used to study a wide variety of viral, bacterial, and parasitic diseases, including leptospirosis, clostridiosis, leishmaniasis, Lyme disease, and babesiosis. 

Human immunodeficiency virus type 1 (HIV-1) exhibits extensive genetic diversity, including the emergence of circulating recombinant forms (CRFs), which result from recombination events between distinct viral subtypes. CRF01_AE, the first CRF to be characterized, is predominantly found in Southeast and East Asia, whereas CRF02_AG is the most prevalent strain in West and West Central Africa.;

The NIAID Data Ecosystem Discovery Portal (https://data.niaid.nih.gov/) allows researchers to search simultaneously across millions of publicly available datasets to find infectious and immune-mediated disease data for reanalysis and accelerates the work of researchers, leading to faster development of diagnostics, therapeutics, and vaccines.

The Discovery Portal can be used to:

• Search across repositories to quickly find datasets that you didn’t know were available to bring other dimensions into your analyses.
• Track research across funding programs or specific scientific areas.

Now available Mpox virus, isolate hMPXV/USA/MA001/2022 (NR-58622), from the current outbreak. For a complete listing of available of Mpox reagents and other Orthopox virus related reagents, click here.

Vector-borne microbial pathogens have evolved a series of strategies to evade the immune system and establish infections in the mammalian host. In this setting, BEI Resources functions as a centralized bioresource for accessibility of reference strains of arthropod vectors to the global public health scientific community. The BEI Vector Resources program currently provides over 60 colonies of live mosquitoes as well as Ixodid and soft ticks, sandflies, black flies    and triatomines. 

BEI Resources is continually building a comprehensive repository of microbiological and emerging disease related organisms and reagents. Suggestions for materials to be added to our repository are always welcome. Click here to tell us what you don't see in our catalog!