Colombia’s yellow-fever notice: reading a national headline and regional change
Understand why the CDC’s Colombia yellow-fever notice distinguishes Tolima and newly affected areas from a countrywide headline.
A national heading does not flatten the geography
The CDC notice is headed Colombia, but its key points identify Tolima as the location where most cases are being reported. The text also describes newly affected areas near places with historical vaccination recommendations. A national heading is therefore an entry point to a more detailed account, not a uniform description of every destination.
The useful comparison is between the places described in that account and the places involved in a journey. Keep the region, country and report date together when making notes. A country-level map marker cannot communicate all of those distinctions, and a place outside a named area should not automatically be labelled free of risk.
Distinguish a change in coverage from a change in the disease
The notice discusses an expansion into areas bordering those previously included in recommendations. That is a statement about the geography described by the agency. It does not, on its own, establish that the virus has changed, that every area has the same burden, or that the same conditions apply to each person's activities.
A careful reader can record what was newly included, which source described it, and when that description was available. Those observations are more useful than turning an expanded boundary into an unsupported nationwide total. This page does not supply additional counts or infer trends from a report that gives no comparable time series.
Keep the map, medical question and entry rule separate
The notice includes a geographic map and directs readers with medical questions to appropriate professionals. A map explains the agency's area-based advice; it is not a personal medical assessment. A country's entry documentation and an individual's health circumstances are also different questions, even when discussed during the same pre-travel appointment.
Our travel-reading guide provides a way to organise those questions, while the historical yellow-fever account explains a separate outbreak in its own period. Neither replaces the dated Colombia report. The source snapshot below preserves the agency wording and its qualifications so readers can distinguish our interpretation from the official text.
Keep three kinds of information distinct
| Information | What it describes | What it does not establish |
|---|---|---|
| Country headline | The notice's overall destination | Uniform conditions throughout Colombia |
| Regional change | New areas discussed by the agency | A new virus or an invented case trend |
| Map and professional advice | Area guidance and individual questions | Automatic medical or entry clearance |
Source snapshot · feed date 16 October 2026
Level 2 - Yellow Fever in Colombia
Yellow fever vaccine recommendations for Colombia (
View larger
)
What is yellow fever?
Yellow fever is a severe viral disease with jaundice and hemorrhagic manifestations that is spread through the bites of infected mosquitoes.
Yellow fever vaccine is the best protection against this disease. Travelers to areas where vaccination is recommended should be vaccinated at least 10 days before travel. Preventing mosquito bites is also important.
Symptoms of yellow fever include fever, chills, headache, backache, and muscle aches, and develop 3–6 days after infection. About 15% of people infected with yellow fever virus will develop severe illness that can lead to liver disease, bleeding, shock, organ failure, yellowing skin and eyes (jaundice), and sometimes death.
Diagnosis is based on symptoms, laboratory testing, and travel history. There are no medications to treat or cure yellow fever.
Key points
An increased number of cases of yellow fever have been reported in Colombia.
Most cases are being reported in Tolima, which includes new areas that border areas where vaccination has historically been recommended (see map). Travelers to these newly affected areas (see map) are now recommended to get vaccinated.
A single dose of yellow fever vaccine is generally considered protective for life; however, a booster dose may be given to certain travelers or travelers who received their last dose of yellow fever vaccine at least 10 years previously and who will be in a higher-risk setting, such as areas in Colombia where cases have been reported.
Travelers getting vaccinated should: Get vaccinated at least 10 days before travel. Contact a yellow fever vaccine provider well in advance of travel. Not all providers carry yellow fever vaccine. Talk with a healthcare professional if they have questions about yellow fever vaccine. Yellow fever vaccine is not recommended for some people.
Travelers to any affected areas should take steps to prevent mosquito bites.
Travelers should seek medical care if they develop fever, chills, headache, backache, or muscle aches, during or after travel in an affected area and protect themselves against mosquito bites for 5 days after symptoms start. Travelers should let their healthcare professional know that they’ve been to an area where yellow fever cases are reported.
Traveler Information
Health Information for Travelers to Colombia
CDC Yellow Fever Website
Register with the US Department of State
Epidemiological Alert - Yellow fever in the Americas Region - 26 March 2025
Clinician Information
Treatment and Prevention of Yellow Fever
Yellow Fever in CDC Yellow Book
Yellow Fever Vaccine Information for Healthcare Providers
Yellow Fever Vaccine Booster Doses: Recommendations of the Advisory Committee on Immunization Practices (MMWR 2015)
Yellow Fever in Americas Region
Sources & Verification
Source: CDC. Original information is available free from CDC. Linking does not imply endorsement by CDC, HHS or the U.S. Government.
- Level 2 - Yellow Fever in Colombia Also cited as: CDC — Yellow Fever in Colombia Verify original (opens in a new tab)
Feed retrieved 24 Oct 2026, 14:09 UTC.
Pinterest
Reddit
