The Johnson & Johnson COVID-19 vaccine is now the third approved for emergency use authorization in the United States, and it's a little different from its predecessors.

Today we are talking about 3 scientists who, through their collective inventions and discoveries, have saved millions of lives.

The University of Oxford has initiated human trials for the first COVID-19 vaccine in Europe, according to the BBC.

Johnson & Johnson announced on Jan. 29 that its single-dose coronavirus vaccine was 66 percent effective in preventing moderate disease

The University of Oxford and AstraZeneca’s coronavirus vaccine was 90 percent effective in preventing COVID-19 in clinical trials, AstraZeneca said in a November 23 press release. <br/>

Most of us know about viruses, and that they spread disease. But what is a virus exactly? Is it alive? How does it infect a host? There's a lot to discuss here! Take a look.

A pair of U.K. studies are offering hints into a mysterious liver disease that's affected more than 1,000 children around the world — including 22 cases documented in Canada. Experts caution that more research is needed before drawing...

One of Canada's largest children's hospitals is reporting seven cases of severe acute hepatitis identified in recent months, which may be part of an unexplained outbreak impacting youth in multiple countries.

A liver illness affecting 169 children in the U.S. and Europe is, so far, a 'medical mystery,' says infectious disease specialist Dr. Isaac Bogoch, and it's premature to attribute it to any one virus or cause.

Rotating animated model of human Adenovirus type 3 2C9F

Rotating animated model of human Adenovirus type 3 2C9F

Virus Cell Loop able

Virus Cell Loop able

Neon red Virus cells loopable animation

Neon Yellow Virus cells loopable animation

Black Virus cells loopable animation

About 90% of the children were hospitalized, 15% needed liver transplants and 5 children have died.

CLEAN: Interior shots interview with Professor Sarah Gilbert, Vaccinologist at Oxford University about coronavirus vaccine testing on 23 April 2020 in Oxford, United Kingdom.