Rodents retain the West Nile virus in the wild and can move it to mosquitoes in other areas.

Dengue is considered an emerging disease because cases have increased 1,000 times since 1955.

A _________ is defined as having a high atomic weight with a spcific gravity that exceeds the specific gravity of water by 5 or more times.

Some metals are considered essential to human nutrition, but can be toxic if ingested in excessive amounts. Of the metals listed, which has the highest likelihood to be leached from home water lines? Workers that mine or process its ore, grind or weld this metal, or do electroplating may be exposed to excess of this metal in dust or fumes.

Why does the “healthy worker effect” bias occupational mortality studies?

List two modes of exposure that humans may be exposed to heavy metals.

If OR is > 1.0, exposure is more likely associated with cases than controls, therefore exposure is more likely associated with disease

Which of the following is a way of protecting the environment in regard to environmental health?

Identify the following measure of disease frequency:  370 Image for Q15 on Exam 1.JPG

Which of the following is addressed by environmental health?