Latest about united states
Why hasn't contact tracing managed to slow the massive surge of coronavirus in the US?
Contact tracing must be paired with other strategies to reduce viral spread.
The US Constitution: Facts about the country's founding document
Written over 200 years ago, the Constitution is a legal document of Articles and Amendments that form the foundation of the federal government, state authority and citizen rights.
When will 'social distancing' end?
The answer depends on when scientists can access reliable data, and when most members of the public adhere to the measure, experts say.
First coronavirus vaccine trial in the US is recruiting volunteers
Forty-five people will be enrolled in the preliminary safety trial of the new vaccine.
Are US communities and hospitals ready to take on COVID-19?
An outbreak of COVID-19 in the U.S. seems inevitable. How will local governments and health care facilities respond?
A US coronavirus outbreak is almost inevitable. Here's how you can prepare.
The CDC has said we need to prepare for a widespread COVID-19 outbreak. How?
How far could the new coronavirus spread?
The transmissibility of the virus depends on many factors, some of which remain unknown.
Coronavirus screening expands to 20 US airports; researchers start work on a new vaccine
U.S. health officials are working to prevent an outbreak at home while developing treatments and preventative countermeasures.
