The world’s largest sporting event, the FIFA World Cup, is now just three weeks away. However, persistent outbreaks of infectious diseases across several regions, including the host nations, are stoking widespread concern.
The 2026 World Cup, running from June 11 to July 19, will be co-hosted by the United States, Canada, and Mexico. Marking the first time three nations have jointly anchored the tournament, the event already faces complex logistical variables, including vast travel distances, multiple time zones, and contrasting regional climates.
Yet, the primary anxiety clouding the tournament is spectator health. With the field expanding to 48 competing nations and the match schedule growing accordingly, total attendance is projected to top 5 million. This massive influx of international travelers arrives at a time when various infectious diseases are actively circulating within the three host countries.
Heightened Risks for Measles and Endemic Illnesses
According to the Korea Disease Control and Prevention Agency (KDCA), measles outbreaks in the host nations have reached high-risk thresholds. In Mexico, the measles incidence rate has climbed sharply to 7.57 cases per 100,000 people, up from 4.94 last year. The United States is experiencing a similar acceleration, reporting 1,792 confirmed measles cases through May—a rapid pace considering the total for all of last year stood at 2,288.
Canada faces a parallel struggle. The country lost its status as a "measles-eliminated nation," a title it had held since 1998, following a surge of more than 5,000 cases stemming from international imports starting in 2024. So far this year, more than 900 infections have flared across seven provinces.
Meanwhile, Mexico—the venue for South Korea’s second match—is grappling with endemic hepatitis A. Transmitted primarily through contaminated food and water, the virus poses a heightened risk in areas with strained sanitation and water infrastructure.
Ebola Outbreaks Trigger International Alarm
Health anxieties extend well beyond the borders of the host nations. Large-scale Ebola outbreaks have struck the Democratic Republic of the Congo (DRC) and Uganda, putting global public health authorities on high alert ahead of peak World Cup travel.
The World Health Organization (WHO) reported on May 17 that suspected Ebola-related cases across both African nations have surpassed 300, with 88 confirmed deaths. Officials from the WHO and the Africa Centres for Disease Control and Prevention warn that the true scale of the outbreak could be significantly larger.
In an official statement, the WHO confirmed the international spread of the virus from the DRC and Uganda, declaring the crisis a Public Health Emergency of International Concern (PHEIC). This designation mandates that member states execute rapid, coordinated interventions, including enhanced diagnostic testing, isolation of confirmed cases, and medical resource-sharing to halt further transmission.
The WHO identified the pathogen driving this cluster as the Bundibugyo virus, a specific strain of the Ebola virus, noting that the situation is aggravated by a lack of approved targeted treatments or vaccines. However, authorities clarified that the outbreak does not currently meet the threshold of a global pandemic like COVID-19.
KDCA Escalates Monitoring and Preventive Guidance
In response to these intersecting threats, the KDCA is urging travelers to protect themselves through up-to-date vaccinations and strict personal hygiene.
"The most effective precaution is to complete all necessary vaccinations, including measles and hepatitis A, before departing for the World Cup," a KDCA official stated. "While traveling, individuals should wash their hands frequently, consume only thoroughly cooked food, and drink safe, bottled, or boiled water."
The official also advised that anyone experiencing symptoms such as fever, rash, muscle aches, or diarrhea within a few days of returning home should minimize contact with others, immediately visit a medical facility, and disclose their recent travel history to healthcare providers.
To manage potential risks, the KDCA will launch a dedicated World Cup Infectious Disease Response Task Force, maintaining continuous surveillance of global disease trends until the conclusion of the tournament.
