Bioweapons alerts may cause lasting psychological

harm: “Mounting fear over anthrax attacks and the potential for other

biological and chemical weapons attacks could have a long-lasting

psychological effect on many people, even if the incidents

themselves remain sporadic, say medical researchers in the UK

and US.

They warn that authorities in many countries could inadvertently

worsen the situation by over-reacting and proposing

countermeasures, such as chemical sensors on subway systems.” New Scientist