Although the conventional wisdom is that people with breakthrough infections can still transmit the coronavirus to others, new research suggests vaccination may change the virus and make it less transmissible, Joe Palca reports for NPR's "Shots."

A second dose of Johnson & Johnson's Covid-19 vaccine would likely increase protection for recipients, according to a new FDA report—but separate research suggests that a booster dose of an mRNA vaccine could be even more beneficial.

More health care workers are facing harassment, and even violence, at work—undermining the fight against Covid-19 and potentially worsening the staffing crisis. Here are four ways health care leaders can protect their workers on the front lines, according to Advisory Board's Carol Boston-Fleischhauer.

Texas on Monday banned Covid-19 vaccine mandates from all entities in the state in opposition to President Joe Biden's federal vaccine mandate for U.S. workers. But several large employers in the state have voiced support for the federal mandate and said they will continue to require their employees to be vaccinated.

The U.S. Preventive Services Task Force on Tuesday issued draft guidance that—in a reversal from the panel's 2016 recommendation—advises against the use of a low, daily dose of aspirin to prevent a first heart attack or stroke for certain populations.

FDA granted its first approval to an electronic cigarette, in today's bite-sized hospital and health industry news from California, Illinois, and Maryland.