That's according to U.S. Department of Agriculture (USDA) microbiologist and research leader Pina M. Fratamico. Researchers such as Fratamico, along with food safety regulators, public health officials and food producers in the United States and abroad, want to know more about these less-studied pathogens.
In the past few years, a half-dozen of these emerging E. coli species, also called "serogroups," have come to be known among food safety specialists as "the Big Six," namely E. coli O26, O45, O103, O111, O121, and O145.
Fratamico and her colleagues are sorting out "who's who" among these related pathogens so that the microbes can be identified and detected quickly and reliably. The researchers are doing that by uncovering telltale clues in the microbes' genetic makeup.
Building upon this work, Fratamico and her Agricultural Research Service (ARS), university, and industry collaborators have developed gene-based PCR (polymerase chain reaction) assays for each of the Big Six. With further work, the assays might be presented as user-friendly test kits for use by regulatory agencies and others. Foodmakers, for example, might be able to use such kits for in-house quality control, while public health agencies might rely on them when processing specimens from patients hospitalized with foodborne illness.
Analyses of test results might help researchers determine whether certain strains of Big Six E. coli species cause more illness than E. coli O157:H7 does, and if so, why.
Fratamico works in the ARS Molecular Characterization of Foodborne Pathogens Research Unit at the agency's Eastern Regional Research Center in Wyndmoor, Pa. ARS is the chief intramural scientific research agency of USDA, and this work supports the USDA priority of enhancing food safety.
Fratamico has collaborated in this work with Chin-Yi Chen, Yanhong Liu, Terence P. Strobaugh, Jr., and Xianghe Yan at Wyndmoor; Connie E. Briggs, formerly with ARS; and others. Their findings appeared in Applied and Environmental Microbiology, the Canadian Journal of Microbiology, and other scientific journals.
USDA is an equal opportunity provider, employer and lender. To file a complaint of discrimination, write: USDA, Director, Office of Civil Rights, 1400 Independence Ave., S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice), or (202) 720-6382 (TDD).
Marcia Wood | EurekAlert!
Alkaline soil, sensible sensor
03.08.2017 | American Society of Agronomy
New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
22.08.2017 | Health and Medicine
22.08.2017 | Materials Sciences
22.08.2017 | Life Sciences