o perigo da agricultura biológica

Bean sprouts are often prime suspects in E.coli outbreaks around the world, and health experts say it is no surprise the hunt for source of the lethal strain that has killed 22 people and made more than 2,200 sick has led to an organic bean farmer.
Some say the case raises questions about the future of organic growing methods.
"Bean sprouts are very frequently the cause of outbreaks on both sides of the Atlantic. They're very difficult to grow hygienically and you have to be so careful not to contaminate them," said Paul Hunter, a professor of public health at Britain's University of East Anglia.
"And organic farms, with all that they entail in terms of not using ordinary chemicals and non-organic fertilizers, carry an extra risk."
Hunter said he personally bought organic fruits and vegetables, but steered clear of organic raw salad foods "for precisely that reason."
The original source of the contamination in Germany is highly likely to be manure, farm slurry or feces of some sort, since the Shiga toxin-producing Escherichia coli or STEC found in this outbreak are known to be able to lurk in cattle guts.