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Tracking COVID-19 Vaccines: U.S. Data

Systems and Related Issues



January 28, 2021
The U.S. Food and Drug Administration (FDA) has granted Emergency Use Authorizations (EUAs) for
two Coronavirus Disease 2019 (COVID-19) vaccines, sponsored by Pfizer-BioNTech and Modema, and
millions of vaccine doses are being distributed nationwide. Both vaccines require two doses, which are
generally not interchangeable. Key to this effort, several existing and new data systems are in use to track,
specifically,
      where  the vaccines supply is: for example, whether vaccines are in a storage center or at
       a provider site, through the Vaccine Tracking System (VTrckS);
      who  has received a vaccine: that is, recipients who have received one or both doses of
       which vaccine, through jurisdiction-based Immunization Information Systems (IIS); and
      if any new safety issues occur: several monitoring systems aim to identify new safety
       issues and inform public health recommendations or FDA actions.
The federal government has long supported data capabilities for vaccines, primarily through the Centers
for Disease Control and Prevention (CDC). As with public health data generally, vaccine data systems use
both federal and nonfederal (e.g., state-based) systems. For a number of years, 64 state, territorial, and
local jurisdictions have received Immunization Cooperative Agreements (commonly referred to as
Section 317 grants) administered by CDC. Among other functions, this flexible grant program has
supported implementation of VTrckS for vaccine supply tracking and IISs for vaccine recipient tracking.
IISs (commonly referred to as immunization registries) enable both (1) consolidated immunization
histories for a given individual, and (2) tracking of administered vaccines across the population. IISs also
aid with vaccine reminders, including second-dose reminders. Most, but not all, jurisdictions have had
IISs. New Hampshire created one for the COVID-19 vaccination program.
Recent reports indicate gaps in vaccine recipient data. Policy issues related to vaccine data have been
highlighted for many years. Inadequate immunization history data and limitations with cross-
jurisdictional data sharing have hindered prior public health emergency response efforts. In addition,
existing vaccine data systems, like other public health data systems, sometimes use outdated technology
or processes.


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