Drug maker Merck is recalling some vials of its HPV vaccines because glass may have ended up in the containers.
The CDC says the glass got into one lot of Gardasil vials during the manufacturing process.
The lot in question was sent out between August and October.
The CDC says patients may have mild symptoms, such as swelling at the injection site, but the vaccine itself isn't impacted.
Merck is contacting the clinics that received the recalled Lot 8 so those vaccines can be returned.
In other health news, operations using a surgical robot have become more common but a new study suggests this high-tech approach may have little benefit.
Researchers from Johns Hopkins University compared data on colon surgeries that used Laparoscopy or a surgical robot.
Both approaches had similar success rates and equal percentages of complications, deaths and length of hospital stays.
However, robotic surgery cost an average of $3,000 more than Laparoscopic surgery.