What you need to know.

Drugmakers who designed the first Covid-19 vaccine to gain clearance from Western regulators say they could reset the shot to counter a new strain within just six weeks, if needed.

Americans are warming up to taking a vaccine. More than 3 million people died in 2020. Alex Padilla to fill Kamala Harris' Senate seat. It's Tuesday's news.

"This unlawful conduct contributed to the epidemic of opioid abuse throughout the United States."

He assured listeners of "The Ten News" that the pandemic will end and life will get back to normal.

The new Covid-19 strain that emerged in the U.K. is possibly already in the U.S., Germany, France and Switzerland, officials in those countries said. Ireland imposed new restrictions to stem an “extraordinary growth” in cases, and said the nation...