"His remarks came on the heels of the release of a Premier survey conducted in May and June last year, indicating that of 5,446 provider respondents, the following engage in unsafe injection practices:
6% sometimes or always use single-dose/single-use vials for more than one patient
9% sometimes or always reuse a syringe but change the needle for a second patient
15.1% reuse a syringe to enter a multidose vial
6.5% save that vial for use on another patient."
"In an incident that came to light just two weeks ago<2011>, children in Colorado were exposed to reused syringes when receiving flu vaccinations in an outpatient pediatric clinic. Dozens of families received letters telling them that their child should be tested for bloodborne viruses such as Hepatitis C and HIV, Perz said."
Links are cool, and they certainly show that issues do exist. It would be great to find definitive links that show how often these type of things happen, and how often a bad outcome occurs because of it.
As parents, there may be ways to lessen errors. Make sure the vaccine is the correct one, delivered in the correct manner. Read the package. A lot of common mistake seem to be giving the wrong patient the wrong vaccine - often DTaP versus Tdap.