The scientists collected water and sediment samples from the interior canal and shoreline of New Orleans and the offshore waters of Lake Pontchartrain, which showed higher-than-normal levels of bacteria and pathogens. Levels of the microbes fell within a few weeks after flooding had completely subsided.
"Our findings emphasize the importance of including environmental monitoring in disaster management plans," said Helena Solo-Gabriele, an environmental engineer at the University of Miami and co-author of the study. "A rapid assessment of conditions can protect emergency workers and residents from potential illnesses that could result from exposure."
The scientists--funded by the National Science Foundation (NSF) and affiliated with the University of Miami's Rosenstiel School of Marine & Atmospheric Science (RSMAS) and other institutions--report their results in this week's issue of the Proceedings of the National Academy of Sciences. The paper, co-authored by 19 scientists and titled, "Impacts of Hurricanes Katrina and Rita on the Microbial Landscape of the New Orleans Area," provides insights into public health and human exposure to both inhaled and ingested pathogens from sewage-contaminated floodwaters induced by hurricanes.
"We know that hurricanes bring infectious disease, chemical contamination and death in their wake," said Don Rice, director of NSF's chemical oceanography program, which funded the research. "Now we are making a concerted effort to study and understand the connections."
During the hurricanes, a high volume of water flowed into cities in their paths. Residents were exposed to flood waters for a long period, say the researchers. The most contaminated area tested, near the New Orleans Superdome, contained high levels of sewage pathogens.
Scientists from RSMAS' Center for Oceans and Human Health, funded by NSF and the National Institutes of Health, along with researchers at five other universities analyzed water and sediment samples collected as the floodwaters receded from New Orleans during the 2 months after the 2005 hurricanes.
The researchers point out that monitoring efforts should focus on evaluating the impacts of sediments within an area affected by hurricane floodwaters, as exposure to contaminated sediments, by inhaling or ingesting, could result in health risks. Efforts should include monitoring pathogens in addition to indicator microbes--those that aren't themselves harmful but are known to exist alongside pathogens.
Improvements should focus, the scientists say, on reducing sewage contamination from groundwater seepage and storm water drainage in the region.
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
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Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
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Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
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Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
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