The ruling institutions of this world are quite comfortable with a virus.
First with SARS, then H1N1, then ebola and now the Zika virus, mainstream media and official organizations have been quick to recognize and counter the threat with travel advisories, quarantines, research funding, vaccine development, and heightened levels of vigilance. Yet information about other kinds of threats that are just as deadly, such as pharmaceutical residues in drinking water, pesticide contamination, or heavy metal poisoning from air and water pollution, are usually relegated to alternative media, ignored, or even actively suppressed by public health authorities. Why is this?
The ready answer that comes to mind is economic. The manmade threats listed above are byproducts of profitable activities by corporations who have tremendous political influence. If we were to thoroughly address toxic contamination of our biosphere, our entire economic, industrial, medical, and agricultural system would have to change.