Data

Results of all blood lead tests must be reported to Public Health Officials per Wisconsin State Law.

Data from the Milwaukee Childhood Lead Poisoning Prevention Program (City of Milwaukee residents only):

Incidence is defined as the number of children (here identified as less than six years old) in any given time period who have exceeded a limit of lead in the blood (here identified as 10 µg/dL) for the very first time in their blood lead history.

Prevalence - expressed as a percentage - is defined as the number of children who have exceeded a limit of lead in the blood (here identified as 10 µg/dL) divided by the total number of children tested for lead in their blood. The time period and age category must be identical for both.

Incidence (<6 yrs)
Year	>=10 µg/dL
1997	3464
1998	2670
1999	2255
2000	1961
2001	2036
2002	1787
2003	1462
2004	1380
2005	1117
2006	884
2007	897

Prevalence (<6 yrs)
Year	>=10 µg/dL
1997	31.9%
1998	26.4%
1999	23.5%
2000	19.3%
2001	16.5%
2002	14.1%
2003	11.3%
2004	9.8%
2005	8.3%
2006	6.5%
2007	5.9%

Testing Penetration

The following table shows the percentage of Milwaukee's 12 through 35 month old children who were reported to be tested at least once in any calendar year. These percentages are based upon the number of blood lead reports received versus the number of eligible children per the birth rate.

Testing Penetration (Children 12-35 months only)
Year
1997	25.0%
1998	37.7%
1999	46.9%
2000	48.8%
2001	52.6%
2002	49.7%
2003	50.6%
2004	53.0%
2005	49.9%
2006	47.5%
2007	50.9%