It was hailed as a pioneering breakthrough, giving hope to millions of sufferers and medical professionals alike.
But a new trial into a gel which scientists thought could block the HIV and Aids virus has been cancelled after researchers reported it was not working.
Despite working surprisingly well in a previous trial, the gel apparently did not have the same success rate in this latest study – something which has baffled scientists.
The trial’s failure has dealt a crushing blow to those working in Aids research, many of whom hoped this microbicide gel would be a significant development in halting the deadly virus.
When scientists revealed the new gel last year, they believed it would block the Aids virus and halve a woman’s chance of getting HIV from an infected partner
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