Due to the lapse of federal funding, portions of this website are not being updated. Any inquiries submitted via www.census.gov will not be answered until appropriations are enacted.
This paper compares the seroprevalence of blood donors and other low risks in 24 African countries to determine whether blood donors are a random selection of the low risk population.
Some content on this site is available in several different electronic formats. Some of the files may require a plug-in or additional software to view.