Bill McKell

Salmonella

By BILL MCKELL,

Although there are more than 2,500 serotypes of this genus (class or group), for the sake of this column, we'll address only two – typhoid fever and nontyphoidal Salmonella.

Nature's poisons

By BILL MCKELL,

It's not difficult to understand Mother Nature's giggles at our dismay when we are confronted with nature’s poisons, not to mention her mosquitoes, when we see what we've done to trash our roadsides, streams, and oceans.

Beware danger of ticks

By BILL MCKELL,

Tick paralysis results from exposure to a neurotoxin released by tick salivary glands during a blood meal; it is the only tick-borne disease not caused by an infectious agent. The toxin appears to be produced exclusively by female, egg-laden ticks.

Social

First Presbyterian Day School fifth-graders celebrated National Kite Flying Day by constructing kites out of household materials.