In alt.support.diabetes outsider wrote:

We've not been able to create "magic bullet" toxins that affect only one
lifeform.

Because we haven't had the technology to be that specific, except by
lucky accident.

The likelihood of doing so is minute, perhaps nonexistent.

Not nonexistent, and growing rapidly as genomics science and
technology develops.

In
the meanwhile I'd rather see penguins in the antarctic experience a
reduction in numbers than a million humans a year lose their lives to
infection by the lowly mosquito. Ans since the mosquito develops a
resistance to the effects of DT, for example, so will the penguins, and
other lifeforms, over time.

But it seems that humans are not developing an immunity to the
infections dispensed by mosquitoes.

You've not heard of sickle cell anemia?

--
Chris Malcolm