In a phase 3 clinical trial, the tetravalent dengue vaccine, developed by the Butantan Institute in São Paulo, Brazil, was 80.5% effective against severe dengue cases with warning signs over a ...

Updated mRNA-1273 vaccine was effective against severe COVID-19 outcomes in older and high-risk adults during the 2024-2025 season.

The COVID-19 pandemic brought messenger RNA (mRNA) vaccines to the forefront of global health care. After their clinical ...

Covid-19 exposed tension in global preparedness, new global agreements need to reconcile global public good rhetoric with national interests.

Kevin Ma, PhD, discusses new data showing 2024–2025 COVID-19 vaccines reduced hospitalization and severe outcomes. In this Q&A, lead study author Kevin Ma, PhD, an epidemic intelligence service ...

A model of a new vaccine targeting a family of coronaviruses that includes the virus that causes COVID-19. The image highlights pieces of several different viruses attached to a computer-designed ...

Add Yahoo as a preferred source to see more of our stories on Google. The Food and Drug Administration (FDA) is investigating whether the COVID-19 vaccines were associated with any deaths across all ...

The Food and Drug Administration (FDA) is investigating whether the COVID-19 vaccines were associated with any deaths across all age ranges. “FDA is doing a thorough investigation, across multiple age ...

This article originally appeared on PolitiFact. U.S. Food and Drug Administration officials said COVID-19 vaccines killed at least 10 children, providing no evidence for the statement. Citing these ...

"In this study, the 2023-2024 COVID-19 vaccines were associated with fewer cases of medically attended COVID-19, with more robust outcomes for critical illness; however, VE waned over time, supporting ...

Kerry Breen is a news editor at CBSNews.com. A graduate of New York University's Arthur L. Carter School of Journalism, she previously worked at NBC News' TODAY Digital. She covers current events, ...