AS ANTHRAX keeps turning up in yet more US government offices, suspicions are
growing that its source is American
(see “The secret is out”).
But wherever it comes from,
postal workers seem to be most at risk. And worryingly, it remains unclear
whether the country’s ageing vaccine can help—and how new and safer
vaccines against such a rare disease can ever be tested and approved.
Clean-up workers may be vaccinated, and health authorities are also
considering vaccinating postal workers thought to be especially vulnerable. But
who is at risk? More undiscovered, contaminated letters could still be out
there.…
