Funding to the CDC’s Division of STD Prevention has dropped from $168.5 million in 2003 to $148 million this year, according to the National Coalition of STD Directors. Adjusted for inflation, that is a 40 percent decrease in purchasing power for the federal health agency and the local health departments it funds. As a result, STD prevention programs have had to lay people off, close clinics and reduce hours, the coalition has found.