The responses to Zohran Mamdani’s showing in the New York City mayoral primary were the latest examples of how some G.O.P.

While Congress fails to stave off cuts to HIV care, community leaders in Mississippi and beyond race to limit the damage.

A CDC panel’s vote to stop recommending thimerosal-containing flu shots would have limited impact, but it illustrates how the anti-vaccine movement is achieving its goals.

Republicans are hoping Zohran Mamdani, a 33-year-old self-proclaimed socialist, becomes the new face of the Democratic Party after his shock win in Tuesday’s Democratic primary in the New York mayoral ...