How effective is AstraZeneca's coronavirus vaccine? We still don't have a clear, consistent answer.

A third coronavirus vaccine could be available to Americans within weeks after Johnson & Johnson submitted its shot to the Food and Drug Administration for emergency use authorization Thursday, and experts say it could greatly improve the nation’s prospects for containing the pandemic in the coming months.

As Nevada lawmakers continue to try and secure more vaccines, medical experts say it is important to disperse the allocation we do have.

They are showing up in our timelines and friend feeds -- photos of people with their selves rolled up after a COVID vaccine. And it turns out the selfies are providing a powerful safety message.

The images are popping up on our social media feeds: pictures of friends, coworkers, and family members proudly displaying their COVID-19 vaccine card.

The 71-year-old raised his arms above his head in triumph after getting a shot of the COVID-19 vaccine Tuesday morning at the Cashman Center downtown.

The 71-year-old man raised his arms in triumph after receiving a COVID-19 injection Tuesday morning at Cashman Center.

The highly anticipated rollout of a COVID-19 vaccine poses ethical considerations: When will trial volunteers who got a placebo be vaccinated? And how will this affect the data in those trials?