http://www.usatoday.com/news/health/2007-10-28-lead-cover_N.htm
The U.S. government banned lead paint in 1978, and U.S. oil companies began
phasing out leaded gasoline in 1975. Since then, the percentage of children
with high levels of lead in their blood has plummeted from 88% in the 1970s
to 1.6% in 2005.
很多老房子如果重新刷漆,应该也没这个问题了