Yellow Fever Vaccine Shortages Threaten Traveler Health & Disease Control
Many nations across Africa and South America currently mandate proof of yellow fever vaccination for entry. Requirements vary; some countries, like Nigeria, demand the certificate universally, regardless of the traveler’s origin. Others only require it from individuals arriving from areas where yellow fever is endemic. Such as, a traveler from a yellow fever-free zone might not need vaccination for direct travel to a specific destination, but would be required to have it if continuing onward to a country with higher risk. Even when not strictly required, vaccination is strongly advised for travel to regions with potential disease transmission.
Though, as peak travel season arrives, Spanish citizens planning trips to yellow fever-risk areas are encountering a significant obstacle: a critical shortage of vaccines at state-run international vaccination centers. This situation poses a growing threat to both individual health and broader public health efforts.
Supply chain Issues Hamper vaccination Efforts
Healthcare professionals at these government-dependent vaccination centers report vaccine supply problems dating back to late 2024, with the situation worsening in recent weeks due to increased travel demand. According to industry experts, in 2023, approximately 150,000 doses of yellow fever vaccine were administered in Spain, a figure expected to rise significantly in 2025.
“The process relies on territorial policy and health ministries procuring vaccines through government sub-delegations,” explains José F. Gallegos Braun, president of the Association of External Health (AMSE) and the Spanish Association of Travel Medicine (Semevi). “Historically, centers could forecast vaccine needs quarterly, adjusting for seasonal peaks and prior-year usage. now, we’re forced to submit requests monthly, even bi-weekly, but these requests are frequently not accompanied by the necessary funding, leaving our refrigerators empty.”
Beyond Yellow Fever: A Wider vaccine deficit
while the yellow fever vaccine shortage is the most pressing concern due to widespread travel requirements, it’s not an isolated issue. Centers are also experiencing stockouts of vaccines for rabies, meningitis, tick-borne encephalitis, and polio. the delays in budget approvals affect all vaccine supplies, but the urgency surrounding yellow fever is amplified by the number of travelers needing it for entry into various destinations.
The world Health Association (WHO) has recently highlighted the increasing prevalence of yellow fever outbreaks in South America, notably in Colombia, with over 100 confirmed cases reported in the first quarter of 2025 alone. This surge underscores the importance of vaccination not only for individual protection but also for preventing further spread.
“The risk to travelers is substantial, especially given the increasing vaccination requirements in many countries,” Gallegos Braun emphasizes. “without adequate vaccine supplies, we are exposing both our citizens and our own territory to preventable health risks. it’s a situation that is rapidly becoming critical.”