The pharmaceutical company Merck has issued a recall for one lot of its HPV vaccine Gardasil due to concerns that there might be glass particles in some of the vials. There are 743,360 vials in the lot, but Merck estimates that only 10 of the vials contain the particles. The vaccines were distributed between August 20 and October 9.
The CDC says not to worry, though, if you think you might have had one of the contaminated vaccines: "People who have recently received an HPV vaccine or their parents do not need to take any action as a result of this recall. If a vaccine containing glass particles (tiny enough to get through a needle) is given to a patient, mild reactions routinely seen after vaccination may occur (for instance, redness or swelling at the injection site). To date, no adverse events related to this lot of HPV vaccine have been reported other than these types of mild reactions."