Directions: After reading the Centers for Disease Control and Prevention case study, as assigned in Module 5 Readings, answer the questions.
Case Study:“Cross-sectional Exposure Assessment of Environmental Contaminants in Churchill County, Nevada” by the Centers for Disease Control and Prevention at http://www.cdc.gov/nceh/clusters/fallon/factsheet.pdf
1) Identify the agent: levels of arsenic, six metals two organophosphate pesticides, two chlorinated phenol pesticides, a repellent and a fungicide
2) What type of agent is described?
Biological: was a results of theexposure of tungsten and arsenicas possible exposures within the community
Chemical: 116 chemicals were found
3) Source:
X anthropogenic
X area X stationary X mobile
X indoor X outdoor
4) Transport/carrier medium:
Xair
X water
X soil
X dust
5) Exposure pathways:
X breathing contaminated air
X touching a contaminated surface
X drinking contaminated water
6) Exposure concentration:
0mg/kg (food) 0 mg/litre (water)
0ug/m3 (air) 0ug/cm3 (contaminated surfaces)
0 % by weight 0fibres/m3 (air)
7) Exposure route:
0inhalation 0 ingestion 0 multiple routes
8) Exposure frequency:
0intermittent
0cyclic 0 random
9) Exposure duration:
X days
X weeks X months
X years X lifetime
10) Exposure setting:
0non-occupational
0residential 0 non-residential
0indoors 0 outdoors
11) Exposed population: a total of 205 people visited the Clinic that was set up within Nevada to do extensive testing. The testing was to consist of Blood samples, and swabbing of the mouth. Some people who were being tested had just moved to the town and had not been their more than days, weeks, and even months. Some people had moved away from the town.
0general population
0population subgroups
0individuals
12) Geographic scope:
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