[QODLink]
Africa
New HIV strain discovered
Researchers find virus strain in African woman that likely originated from gorillas.
Last Modified: 03 Aug 2009 07:53 GMT
The equivalent of HIV in apes was first
discovered in gorillas in 2006 [EPA]

A new strain of the virus that causes Aids has been discovered in a woman from the West African nation of Cameroon.

The virus strain appears to come from gorillas but researchers said the woman has likely been infected by another human, not an animal.

"We have identified a new human immunodeficiency virus in a Cameroonian woman", Jean-Christophe Plantier of the Universite de Rouen in France wrote together with his colleagues in the journal Nature Medicine on Sunday.

"It is closely related to gorilla simian immunodeficiency virus and shows no evidence of recombination with other HIV-1 lineages..."

The 62-year-old woman had no contact with gorillas but said she had had several sex partners. 

She was diagnosed with HIV in 2004, soon after she moved to France from Cameroon.

Routine genetic sequencing of the virus showed it looked like no other sample of HIV virus and it was eventually compared to a gorilla simian immunodeficiency virus which was discovered in 2006.

Source

All previously discovered subtypes of the virus have been linked to chimpanzees.

"Our findings indicate that gorillas, in addition to chimpanzees, are likely sources of HIV-1," Plantier's team wrote.

"The discovery of this novel HIV-1 lineage highlights the continuing need to watch closely for the emergence of new HIV variants, particularly in western central Africa, the origin of all existing HIV-1 groups."

There are several theories seeking to explain how SIV, the equivalent of HIV in apes, entered humans.

Scientists say it likely jumped to people hunting chimps. Either an infected ape bit a human, or a SIV-infected animal was killed for bush meat, and the virus entered the
bloodstream of the butcher through tiny cuts in the hand. 

HIV has infected an estimated 33 million people globally and has killed another 25 million.

Source:
Agencies
Topics in this article
People
Featured on Al Jazeera
'Justice for All' demonstrations swell across the US over the deaths of African Americans in police encounters.
Six former Guantanamo detainees are now free in Uruguay with some hailing the decision to grant them asylum.
Disproportionately high number of Aboriginal people in prison highlights inequality and marginalisation, critics say.
Nearly half of Canadians have suffered inappropriate advances on the job - and the political arena is no exception.
Featured
Women's rights activists are demanding change after Hanna Lalango, 16, was gang-raped on a bus and left for dead.
Buried in Sweden's northern forest, Sorsele has welcomed many unaccompanied kids who help stabilise a town exodus.
A look at the changing face of North Korea, three years after the death of 'Dear Leader'.
While some fear a Muslim backlash after café killings, solidarity instead appears to be the order of the day.
Victims spared by the deadly disease are reporting blindness and other unexpected post-Ebola health issues.