The Rosenwald Fund , a major Chicago -based philanthropy devoted to black education and community development in the South , provided financial support to pay for the eventual treatment of the patients. They had previously collaborated with Public Health Services in a study of syphilis prevalence in over 2,000 black workers in Mississippi's Delta Pine and Land Company in 1928, and helped provide treatment for 25% of the workers who had tested positive for the disease.  Study researchers initially recruited 399 syphilitic Black men, and 201 healthy Black men as controls.
An article on Jan 10. about legal action against DuPont for chemical pollution referred incorrectly to DuPont’s response in the 1970s when the company discovered high concentrations of PFOA in the blood of workers at Washington Works, a DuPont factory. DuPont withheld the information from the ., not from its workers. The article also misstated the year DuPont agreed to a $ million settlement with the . It was 2005, not 2006. In addition, the article misidentified the water district where a resident received a letter from the district noting that PFOA had been detected in the drinking water. It was Lubeck, . — not Little Hocking, Ohio. The article also misidentified the district where water tested positive for PFOA at seven times the limit. It was Little Hocking, not Lubeck. And the article misidentified the city in Washington State that has fluorochemicals in its drink-ing water. It is Issaquah, not Seattle.