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June 18, 2013


Nanotech Silver Solutions Toxic to Humans and the Environment


Tests carried out by the Pasteur Institute/Vietnam and Vietnam’s Southern Monitoring Centre for Aquaculture Environment and Epidemics, part of the Research Institute for Aquaculture No.2, have shown that a nanotech silver solution has the ability to kill several bacteria including Vibrio cholera, E. coli, and Vibrio parahaemolyticus.


V. parahaemolyticus infected with a virus (a phage) has been identified as the cause of early mortality syndrome (EMS), a disease that is killing farmed shrimp in China, Malaysia, Thailand, Vietnam and possibly Mexico.


The nano silver solution is being tested on shrimp farms in Vietnam to determine if it can stop the EMS/AHPNS epidemic.  Scientists said they could not answer questions about the safety of the silver solution until more tests were conducted.


In June 2009, Friends of the Earth in Australia and the United States published a 47-page report with 116 references (many of them with hot links to the original research) on the safety of nano silver solutions.  Following are some quotations from the executive summary of that report:


“There is clear evidence that silver, and in particular nano silver, is toxic to aquatic and terrestrial organisms, a variety of mammalian cells in vitro, and may be detrimental to human health.  While undoubtedly silver and nano silver have useful applications in the medical arena (for instance as coatings for medical devices or as wound care for severe burns victims), their use needs to be strictly controlled and the dictum ‘no data, no market’ should always be followed.”


“There are preliminary indications that in nanoparticle form, the toxicity of ionic silver may be increased, or that the nanoparticles may exert their own toxicity.  The disposal of biocidal silver products into wastewater raises a number of concerns as the resulting sewage sludge may be used on agricultural soils, disposed as solid waste in landfills or be incinerated.  Biocidal silver may also disrupt the functioning of key soil microbial communities.”


For a full copy of the report, click on the link in the Source (below).


Source: Friends of the Earth Australia and Friends of the Earth United StatesNano and Biocidal Silver: Extreme Germ Killers Present a Growing Threat to Public Health.  Dr. Rye Senjen and Ian Illuminato.  June 2009.


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