Health Care

Pfizer stock downgraded on expiring Viagra, Lyrica patents

Shares of the pharmaceutical giant Pfizer (NYSE:PFE) took a dip Thursday morning after a Wall Street bank lowered its stance on the drugmaker amid two key drug patent expirations—including their its popular Viagra drug—over the next 18 months.

AIDs deaths down nearly 50% since 2005, UN reports

AIDS-related deaths globally have been cut by nearly half since 2005 as a record number of people from around the world are gaining access to treatments, the United Nations reported Thursday.