The U.S. Department of Health and Human Services (HHS) is reportedly delaying the distribution of updated pediatric Covid-19 vaccines to at least 11 states and one U.S. territory, without providing a clear timeline for when the vaccines might become available. This decision has sparked concern among public health experts, who warn that it could set a precedent for limiting access to other vaccines through the federal Vaccines for Children (VFC) program. The VFC program provides free vaccines to children up to 18 years old, regardless of their insurance status or ability to pay, and is a key mechanism for ensuring widespread immunization. More than half of children in the U.S. receive their vaccines through the VFC program, which operates in states and territories that have established "universal" vaccine purchasing systems. These include states like Alaska, Connecticut, Hawaii, Maine, Massachusetts, New Hampshire, New Mexico, Rhode Island, Vermont, Washington, and Wyoming, among others. These states typically order vaccines in bulk and distribute them through local providers, ensuring that all children have access. However, HHS is not currently providing the updated pediatric Covid vaccines through this system, leaving some children without access to the latest protection against the virus. Emily Hilliard, a spokesperson for HHS, confirmed that the updated vaccines are not available through the VFC program at this time. She stated that an arbitrary September deadline for vaccine procurement should not be treated as a public-health requirement. The Centers for Disease Control and Prevention (CDC) is "finalizing decisions" regarding vaccine procurement through the VFC and Section 317 programs, with more information expected soon. However, Hilliard did not address the potential impact on states that rely on universal vaccine purchasing. Public health experts have raised concerns about the implications of this delay. Daniel Jernigan, a former CDC official, criticized the decision, saying it could hinder states' ability to provide vaccines to all children. He emphasized that the updated vaccine offers the best protection against current variants of the virus and that withholding it is "almost derelict" given the risk of severe illness in children. Jernigan also expressed concern over recent changes in how certain vaccines are classified, which could allow healthcare providers more discretion in recommending them, though a court has temporarily blocked those changes.