Location of human infections with simian foamy virus (SFV) in the Democratic Republic of Congo (DRC). Kole and Lomela health zones are shown in boxes with the 14 rural villages within the Sankuru district in the east central forested region of DRC. A key of the sites with different serologic and PCR evidence of SFV and those without evidence of SFV is provided. SFV prevalences are provided in parentheses after village names. Tree cover is indicated by light green, woodland; dark green, forest; white, savanna.