Table 1

Types of Vaccine Products Affected by Drug Shortagesa

Product TypebNo. (%) ShortagesMedian Shortage Duration in Months (IQR)Median (95% CI) Difference vs. Other Product Types, in Months
All products59 (100)16.8 (5.8–27.3)
Bacterial vaccines18 (31)22.6 (11.1–27.4)5.7 (−2.5 to 16.2)
Combination products9 (15)25.7 (16.3–36.8)9.0 (−3.9 to 20.2)
Immune globulins8 (14)5.1 (3.7–13.9)−6.8 (−17.6 to 0.0)
Toxoids7 (12)23.3 (4.1–36.8)2.2 (−18.2 to 21.5)
Viral vaccines34 (58)16.6 (6.1–27.8)−0.7 (−10.5 to 5.7)
Products on pediatric schedule30 (51)21.7 (8.0–28.1)5.0 (−0.7 to 14.1)
Vaccine with deferral required during shortage21 (36)22.3 (11.1–27.4)5.6 (−2.2 to 13.7)
Single-source products30 (51)19.8 (11.1–26.7)3.5 (−3.5 to 11.9)
  • a IQR = interquartile range, CI = confidence interval.

  • b Some products may fit into more than 1 category.