Health authorities are warning of disease outbreaks in western Colombia and La Guaira, Venezuela, following recent earthquakes that damaged critical infrastructure [1], [2].

These warnings come as the destruction of water and sanitation systems creates conditions for infections, while the collapse of medical facilities interrupts life-saving treatments for survivors [1], [3].

In Colombia, a magnitude 7.4 earthquake struck on Aug. 10, 2026 [1]. Reports published nine days after the event indicate that the lack of potable water and hygiene services has left affected communities vulnerable to illness [1]. Officials said that restoring these services is essential to prevent a secondary crisis of communicable diseases.

Similar challenges were noted in Venezuela, where rescue operations were active as of July 1, 2026, in the state of La Guaira [2]. The regional instability has complicated the delivery of medical supplies and the continuity of care for patients with chronic conditions [2].

Health teams are focusing on the prevention of infections through the distribution of clean water and the establishment of temporary health posts [1], [3]. The risk remains high because damaged sewage systems can contaminate local water sources, a common occurrence after large-scale seismic events [3].

Medical teams said that the interruption of ongoing treatments represents a critical gap in the recovery process [3]. While some reports indicate these health challenges peaked one week after the disaster, other data suggests the risk remains acute through the ninth day [1], [3].

Rescue teams continue to work in temporary camps to provide basic hygiene kits, and medical screenings to the most vulnerable populations [1], [2]. The priority remains the restoration of sanitation infrastructure to stop the spread of waterborne pathogens [3].

“The destruction of water and sanitation systems creates conditions for infections.”

The transition from immediate rescue to long-term recovery in seismic zones often triggers a secondary public health crisis. When water and sanitation infrastructure fails, the risk of cholera and other waterborne diseases increases, while the loss of pharmacy and clinic access can lead to a spike in mortality for patients with non-communicable diseases. The situation in Colombia and Venezuela highlights the necessity of integrating health infrastructure resilience into disaster response.