The news devastated the researchers, who live and work in a region where more people live with HIV than anywhere else in the ...

Just a week had remained before scientists in South Africa were to begin clinical trials of an HIV vaccine, and hopes were high for another step toward limiting one of history' ...

Pope Leo XIV called on Sunday for compassion for the world’s poor, victims of tyranny and wars, as he celebrated Mass in a parish church that has special spiritual ties to Leo's own Augustinian ...