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The U.S. Preventive Services Task Force (USPSTF) periodically releases new and updated guidelines (guidelines homepage).
The USPSTF concludes each of its guidelines with a recommendation, graded as follows:
A — The intervention is strongly recommended.
B — The intervention is recommended.
C — The USPSTF makes no recommendation for or against the intervention.
D — The intervention is not routinely recommended.
I — Evidence is insufficient to recommend for or against the intervention.
The prevalence of blood lead levels >10 μg/dL among U.S. children aged 1 to 5 years dropped dramatically from 9.0% in 1990 to 1.6% in 2000. Risk factors for elevated blood lead levels include minority race or ethnicity, low income, and residing in a house built before …