This small, yellow booklet is a vital document for travelers visiting or coming from countries where yellow fever is a risk.

The card serves as proof that you have been vaccinated against yellow fever, a potentially serious viral infection transmitted by mosquitoes in certain parts of Africa and South America. Many countries require proof of yellow fever vaccination for entry, and without it, you may be denied entry or even quarantined.

Protect yourself and others by getting vaccinated and carrying your yellow fever card with you when traveling to at-risk regions. It’s a simple step that can make a big difference in your health and travel plans.