Two COVID-19 vaccines have 90% effectiveness or higher

Doctors question how long COVID-19 vaccines will be effective after Moderna and Pfizer each claim more than 90 percent of their vaccine trial participants were healthy.

Moderna says its coronavirus vaccine candidate is 94.5% effective

There's more promising news on the COVID-19 vaccine front as Moderna says its shot provides strong protection against the coronavirus.

Plant-based COVID-19 vaccine candidate enters Phase 2 trial

A biopharmaceutical company has announced positive Phase 1 trial results of a potential plant-based COVID-19 vaccine.

The economy appears poised to benefit from a COVID-19 vaccine

"Businesses are back to the business of doing business," says RIA Advisors economic strategist Lance Roberts. "What a vaccine does is allow them to expand operation, to attract more business, and take advantage of more things."

COVID-19 vaccine: Who will get the first doses?

Scientists vary in their recommendations over who should get the first doses of the COVID-19 vaccine.

AstraZeneca plans to deliver vaccine trial data by year's end

AstraZeneca hopes to show its COVID-19 vaccine is effective by the end of this year and is ramping up manufacturing so it can supply hundreds of millions of doses in January, Chief Executive Pascal Soriot said Thursday.

Team of UC Berkeley scientists study poop in sewers for COVID-19 hotspots

Knowing what neighborhoods are virus hotspots can help health officials figure out how to enact orders to clamp down on the spread and figure out if their efforts are even working.