Navigation Links
Anthrax spores may survive water treatment

Anthrax spores may survive traditional drinking water disinfection methods and can attach themselves to the inside surface of water pipes, suggesting water treatment facilities should be prepared to employ alternate disinfection methods in the unlikely event of the release of anthrax in the water supply. Researchers report their findings today at the 2006 ASM Biodefense Research Meeting.

"The purpose of this study was to determine the fate of anthrax spores in a drinking water system that uses chlorine as a disinfectant. Though researchers have some knowledge of how other waterborne pathogens may survive or die in drinking water systems, little is understood about the fate of anthrax spores in chlorinated water systems," says Jon Calomiris of the Air Force Research Laboratory at Aberdeen Proving Ground in Edgewood, Maryland, who conducted the study.

Calomiris investigated the ability of anthrax spores to survive in water with a concentration of 1 milligram of chlorine per liter (typical tap water has a concentration of 1 to 2 milligrams per liter). After 60 minutes in the water, there was no significant decrease in the number of viable spores.

"Under those same conditions, one minute exposure could kill 99.99 percent of other waterborne pathogens that do not exist as spores," says Calomiris.

Higher concentrations of chlorine were much more effective. At 5mg/L (a concentration that might be used by treatment systems during periods when drinking water is turbid) 97 percent of spores were killed after one hour. At 10mg/L (similar to a highly chlorinated swimming pool) 99.99 percent were killed, but the chlorine concentration would be too high for the water to be drinkable.

Calomiris also tested the ability of spores to attach to the inside of pipes, by running contaminated water in a continuous loop through sections of pipe made of either copper, CPVC or galvanized iron (a material no longer used for home plumbing but e xisting in older construction). After 6 hours anywhere from 20 to 40 percent of spores had attached themselves to the surface of the copper and CPVC pipes, 95 percent attached to the iron pipes. When biofilms were present on the interior of copper pipes attachment increased to 80 percent.

"The data seem to suggest that anthrax spores can tolerate water treatment, can attach to pipes or biofilms within the pipes, and could pass through pipe systems to reach the consumer tap," says Calomiris.

In the unlikely event of the release of anthrax spores into the water supply, alternate decontamination protocols (such as exposure to higher concentrations of chlorine or an alternate disinfectant for an extended period of time) may be needed as regular treatment methods may not be effective, he says.


'"/>

Source:American Society for Microbiology


Related biology news :

1. Study Models Impact Of Anthrax Vaccine
2. Anthrax test, developed by army and CDC, receives FDA approval
3. Anthrax inhibitors identified by Burnham team
4. Anthrax stops body from fighting back, study shows
5. Anthrax inhibitor counteracts toxin, may lead to new therapeutics
6. Anthrax attack posed greater potential threat than thought
7. Anthrax paralyzes immune cells with lethal toxin, UF research shows
8. Scientists seek answers on what activates deadly anthrax spores
9. Pillows - a hot bed of fungal spores
10. Airborne mold spores increase kids risk for multiple allergies
11. Single molecular mark seen as pivotal for genome compaction in spores and sperm
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2016)... May 16, 2016   EyeLock LLC , a ... the opening of an IoT Center of Excellence in ... expand the development of embedded iris biometric applications. ... of convenience and security with unmatched biometric accuracy, making ... aside from DNA. EyeLock,s platform uses video technology to ...
(Date:5/3/2016)... 2016  Neurotechnology, a provider of high-precision biometric ... Biometric Identification System (ABIS) , a complete system ... ABIS can process multiple complex biometric transactions with ... fingerprint, face or iris biometrics. It leverages the ... MegaMatcher Accelerator , which have been used ...
(Date:4/26/2016)... BANGALORE, India and LONDON ... Infosys Finacle, part of EdgeVerve Systems, a ... ), and Onegini today announced a partnership to ... banking solutions.      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ... banks to provide their customers enhanced security to ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica delle ... people with peritoneal or pleural mesothelioma. Their findings are the subject of a new ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of mesothelioma ...
(Date:6/23/2016)...   Boston Biomedical , an industry leader ... target cancer stemness pathways, announced that its lead ... Designation from the U.S. Food and Drug Administration ... gastroesophageal junction (GEJ) cancer. Napabucasin is an orally ... stemness pathways by targeting STAT3, and is currently ...
(Date:6/23/2016)... HOUSTON , June 23, 2016 ... agreement with the Cy-Fair Sports Association to serve ... of the agreement, Houston Methodist Willowbrook will provide ... education and connectivity with association coaches, volunteers, athletes ... partner with the Cy-Fair Sports Association and to ...
(Date:6/23/2016)... 23, 2016  The Biodesign Challenge (BDC), a university ... to harness living systems and biotechnology, announced its winning ... New York City . ... showcased projects at MoMA,s Celeste Bartos Theater during the ... MoMA,s senior curator of architecture and design, and ...
Breaking Biology Technology: