Close examinations of more than a dozen vaccinated people found that immune cells were still organizing to fight the coronavirus months after inoculation.

The rising death toll in a Miami building collapse.

The Times photographer Adam Ferguson worked with migrants in Mexico who planned to cross the border into the United States to create a series of self-portraits.

Rescuers have recovered nine bodies from the Florida building collapse.

Israel’s foreign minister, Yair Lapid, is determined to repair his government’s fraught relationship with Washington Democrats, but he does not necessarily speak for his own right-wing prime minister, Naftali Bennett.

An encouraging note from Pope Francis capped an especially disorienting week on the Vatican’s stance toward gay rights.

Nearly 16 percent of those eligible for a second dose had not returned for them as of June 1.

Climbers posted firsthand accounts of being infected, but officials in Nepal, which relies on tourism revenue, dismissed them as rumors.

A cluster that began with an airport limousine driver has jumped to nearly 100 cases, with dozens more expected over the coming days.

Australian officials instituted a strict two-week lockdown for Sydney, and surrounding areas on Saturday, to fight an outbreak of the coronavirus Delta variant. It is Sydney’s first full lockdown since early 2020.