Argentina's Hantavirus Outbreak: World Cup Travel Fears

Argentina is currently confronting a severe hantavirus outbreak, marking one of its most significant in recent years. As of May 12, 2026, health authorities have reported 101 confirmed infections and 32 deaths, a notable increase from previous periods. The Andes virus strain, found predominantly in Argentina and Chile, is a particular focus due to its capacity for limited human-to-human transmission.

Thousands of Argentine football fans are expected to travel to the United States for the upcoming World Cup matches, with initial games scheduled for June 16 in Kansas City and June 22 in Dallas. This influx of international travelers, combined with the ongoing hantavirus outbreak, has prompted health officials to monitor potential risks. However, experts stress that hantavirus does not spread easily in casual settings and requires prolonged, close contact for transmission.

Public health officials are urging caution against panic, noting that hantavirus transmission rates are significantly lower than respiratory viruses like COVID-19. While imported cases are possible, the Centers for Disease Control and Prevention (CDC) assesses the risk of widespread transmission in the United States as extremely unlikely. Efforts are focused on contact tracing and preparedness for potential cases, rather than broad public health restrictions. Climate change is also cited as a potential factor in the rise of rodent populations carrying the virus in Argentina.