Pfizer to study effects of vaccine in pregnant women.

The pharmaceutical company will also submit data to the CDC that says its vaccine might not have to be stored in extreme temperatures.

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Once ravaged, Black-owned businesses are making a comeback and hoping to build wealth.

Once ravaged, Black-owned businesses are making a comeback and hoping to build wealth.

Josephine Bolling McCall says her father was killed by white men in 1947 because they envied his success. In Virginia, the Jackson Ward Collective is helping Black business owners find resources.

Fighting for vaccine equity: Philly doctor outpaces city in vaccinating minorities.

Fighting for vaccine equity: Philly doctor outpaces city in vaccinating minorities.

ABC News’ Linsey Davis reports on Dr. Ala Stanford and her push to ensure hard-hit Philadelphia neighborhoods receive access to the coronavirus vaccine.

Mississippi residents left without clean running water after winter storms.

Mississippi residents left without clean running water after winter storms.

Jackson, Mississippi, Mayor Chokwe Lumumba discusses the city’s response to the thousands of residents without water for nearly two weeks and what needs to be done to prevent future outages.

Vaccine Watch: Nations engage in vaccine diplomacy

Vaccine Watch: Nations engage in vaccine diplomacy

ABC News’ Bob Woodruff reports on how China, Russia and India are providing vaccines for countries around the world, spreading their influence on the global stage during the pandemic.

The Rundown: Top headlines today: March 1, 2021

The Rundown: Top headlines today: March 1, 2021

Stay up to date on the developing stories making headlines.