Defective viruses, thought for decades to be essentially garbage unrelated to the transmission of a virus, now appear able to play a much more important role in the spread of disease, biologists show.

A manufacturer of amazing medical devices known as cochlear implants, which restore hearing to the deaf, sold defective implants to young children and adults for years — even after learning that a ...

In the past decade the US Food and Drug Administration (FDA) has collected 5.4 million ‘adverse event’ reports which included 1.7 million injuries and almost 83,000 deaths and nearly half a million ...