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Decisions around vaccine container size and type -- whether single-dose vial, multi-dose container or pre-filled syringe -- have important implications for a variety of stakeholders, from the manufacturers who make vaccines, to the governments and organizations that buy them, to the health workers who administer the vaccines, to the patients that benefit from their protection.
After randomisation, a number corresponding to a single-dose vial containing the study drug or placebo will be assigned to the patient.
The patient underwent fluoroscopy-guided spinal injection of 10 mL of iohexol 300 mgI/mL contrast medium from a single-dose vial prepared by a nurse in accordance with Centers for Disease Control and Prevention guidelines (10 ).
An evaluation of three potential "5+1" sub-strategies is as follows: 1. Pentavalent vaccine + stand-alone full-dose IPV delivered intra-muscularly: The cost-of-goods difference between the hexavalent vaccine strategy and this strategy is modest, when considering ten-dose vials, but more significant when comparing single-dose vial presentations.
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While such vials may reduce waste of medicine, they are more susceptible to contamination than single-dose vials.
It also stated that single-dose vials of medicine "are preferred" because they are much easier to keep sterile.
Officials with the Food and Drug Administration said they were not aware of a federal recommendation on using single-dose vials.
The issue of thimerosal received public attention in 1999 when the American Academy of Pediatrics and the United States Public Health Service took the precautionary step of asking that thimerosal be removed from single-dose vials of all vaccines.
The F.D.A.'s concern about heparin had previously centered on Baxter's multidose vials, but on Thursday Baxter agreed to voluntarily recall not only the multi-dose vials but also single-dose vials and a diluted solution of heparin used to keep blood clots from forming in intravenous lines.
To some extent, thiomersal is still used in vaccines in the United States and Europe, for example in some flu shots, but if there were a ban we could easily switch to single-dose vials.
Banning it would require switching to single-dose vials for vaccines, which would cost far more and require new networks of cold storage facilities and additional capacity for waste disposal, the authors of the articles said.
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