# Hepatitis A outbreaks in Costa Rica > Live situation record from CLSTR: https://clstr.news/situations/hepatitis-a-outbreaks-in-costa-rica > Updated: 2026-08-22T12:09:03.000Z. Sources: 2. Developments: 2. In early August, the Costa Rican Ministry of Health confirmed 14 cases of Hepatitis A in the districts of Aserrí and San Juan de Dios de Desamparados. Technical inspections of local water supplies identified issues in the Lourdes System of the Aserrí Municipal Aqueduct, including sediment, fecal coliforms, and insufficient residual chlorine. While the aqueduct reported the water was fit for consumption following corrective measures, authorities noted that the disinfection deficiencies did not definitively prove the water was the source of the infections. By late August, health officials expanded investigations into active outbreaks across several populated districts in San José, including Hatillo and Hospital. While specific case numbers for these newer locations were not immediately released, health teams continued epidemiological surveillance and symptomatic searches to limit transmission. Officials advised the public to maintain rigorous handwashing and food hygiene practices. ## Timeline ### 2026-08-22: Costa Rica investigates hepatitis A outbreaks in San José districts Costa Rica's Ministry of Health is investigating hepatitis A outbreaks in the San José districts of Desamparados, Hatillo, and Hospital, conducting epidemiological searches to prevent further spread. 2 sources. https://clstr.news/cluster/costa-rica-investigates-hepatitis-a-outbreaks-in-san-jos-districts ### 2026-08-07: Costa Rica confirms 14 Hepatitis A cases amid water contamination Costa Rica reports 14 Hepatitis A cases linked to water contamination in Aserrí. Authorities identified fecal coliforms and disinfection failures in the local municipal aqueduct system. 2 sources. https://clstr.news/cluster/costa-rica-confirms-14-hepatitis-a-cases-amid-water-contamination --- Cite as: Hepatitis A outbreaks in Costa Rica. CLSTR, https://clstr.news/situations/hepatitis-a-outbreaks-in-costa-rica