Langley joins the FBI and Energy Department in agreeing that a lab leak is the most likely source of the pandemic.

With the acute phase of the Covid-19 pandemic fading even as the ... Experts expect cases to rise again this winter. Here’s the latest on symptoms, treatments and testing.

CIA continues to assess that both research-related and natural origin scenarios of the COVID-19 pandemic remain plausible.” ...

The CIA says it has "low confidence" in its assessment that a "research-related origin of the COVID-19 pandemic is more ...

Various U.S. intelligence agencies have launched investigations into the start of the COVID-19 pandemic, often reaching “low ...

Seventeen states around the U.S. reported "very high" wastewater levels of SARS-CoV-2—the virus that causes COVID-19—during ...