U.S. Health and Human Services Assistant Secretary for Health Rachel Levine was sworn in as a full admiral Tuesday, making her the first openly transgender four-star officer in the U.S. uniformed services.

Conflicting court rulings about Covid-19 vaccine mandates for health-care workers in Maine and New York could lead the U.S. Supreme Court to reconsider its stance on what freedom of religion means for employees.

If and when federal OSHA enacts its national Covid-19 shot-or-test requirement, some state governments opposing that mandate could stave off for months the enforcement of its requirements.

U.S. vaccine regulators have broad authority to allow mix-and-match Covid-19 vaccine boosters under its emergency powers, even if Johnson & Johnson and other companies don’t apply for it.

The U.S. Food and Drug Administration is poised to clear the use of a Covid-19 booster from a different manufacturer than the one that supplied a patient’s original inoculation, according to people familiar with the matter.

President Joe Biden’s Justice Department asked the U.S. Supreme Court to lift Texas’s ban on abortion after the sixth week of pregnancy, setting up a new high court showdown over what is easily the most restrictive abortion ban currently in force in the country.