MSF administers hundreds of thousands of vaccinations every year, helping protect children and grown-ups alike from preventable diseases that are often deadly. Unused, hygienic syringes make that lifesaving work possible. Every day, MSF uses dozens of single-use syringes, inoculating entire populations from meningitis, measles, and other life-threatening diseases. Packed in sterile wrappers, these high-grade syringes with needles come outfitted with a blocking device to prevent leaking and the chance of exposure to blood-borne diseases like HIV. This same feature prevents the syringes from being used again.