illness," says Nathan Wolfe, a biologist at Johns Hopkins University in Baltimore.
Recently,
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, scientists tracked the spread of SIV-related simian foamy virus (SFV), a germ described as foamy because it makes a host's cells clump together,
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, giving them a foamy appearance under a microscope. Researchers have been interested in learning about SFV because limited studies have suggested that the virus is probably "more transmissible than SIV," says Wolfe. SFV has infected lab and zoo workers in North America through accidental encounters with baboons, African green monkeys, macaques,
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, and chimpanzees (SN: 2/28/04,
cheap air jordans
, p. 141: Available to subscribers at
Primate virus found in zoo workers).
Crossing the species barrier
In the current study, Wolfe and colleagues wanted to see whether SFV is easily transmitted into people who typically encounter primates in the wild. The researchers assessed the exposure of 1,800 Cameroon villagers to monkeys and apes. Sixty-one percent of the participants said they had direct contact with blood and body fluids of primates from hunting them and,
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, to a lesser extent,
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, keeping the animals as pets.
From blood tests,
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, the researchers determined that 10 study participants carried antibodies to SFV, indicating that they were currently or had been infected with the virus. Blood from 3 of the 10 individuals contained DNA from the virus,
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, a stronger proof of SFV infection. None of the 10 showing signs of infection had obvious symptoms of illness.
The genetic sequence of viral DNA found

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