# Argentina influenza surge and declining vaccination rates > Live situation record from CLSTR: https://clstr.news/situations/influenza-outbreak-in-argentina > Updated: 2026-09-07T22:06:16.000Z. Sources: 53. Developments: 5. Argentina continues to face a public health crisis driven by low vaccination rates and a record-breaking influenza season. While influenza cases have reached nearly 800,000, the country is also seeing a rise in other preventable diseases. Specifically, approximately 8,200 new tuberculosis cases have been reported, and pertussis caused 14 deaths among infants and children under two years old between 2025 and early 2026. Immunization coverage remains critically below the 95% target necessary to halt pathogen circulation. Reported rates include 49.4% for Hepatitis A, 50.5% for the first dose of polio, and 51.5% for the triple viral vaccine. In the province of Salta, influenza notifications have seen a significant decline, dropping approximately 70% from a peak of over 1,300 weekly cases to around 400. However, health officials remain cautious regarding a potential resurgence in September. Francisco García Campos, Director General of Epidemiological Coordination for the Ministry of Public Health, warned that the Milagro celebrations, which attract thousands of people, could facilitate new outbreaks. In Salta, the most affected demographics include children and adolescents aged 5 to 14, as well as adults in the 25–34 and 45–64 age brackets. Recent reports confirm the 70% decrease in influenza cases in Salta, but health ministries in Entre Ríos have noted a sustained increase in pediatric consultations for respiratory illnesses. This has prompted officials to reinforce recommendations regarding vaccination and ventilation. ## Claims - Children under 10 years old account for 48% of influenza infections. (corroborated by 4 sources) - The 'superflu' is characterized by high, sustained fever reaching 39 to 39.5 degrees Celsius. (corroborated by 3 sources) - 96% of sequenced samples in 2026 by the Malbrán Institute correspond to the A(H3N2) subclade K. (single source) - 790,523 influenza cases have been recorded so far this year in Argentina. (single source) ## Timeline ### 2026-09-07: Health authorities monitor respiratory outbreaks and neonatal care in South America and Caribbean Health authorities in Bolivia, Argentina, and the Dominican Republic are managing various outbreaks, including pediatric respiratory illnesses and neonatal intensive care surveillance. 8 sources. https://clstr.news/cluster/salta-reports-70-drop-in-influenza-cases-amid-resurgence-warnings ### 2026-09-07: Argentina faces rise in preventable diseases amid low vaccination rates Argentina reports rising cases of Hepatitis A, tuberculosis, and influenza as national vaccination coverage remains well below the 95% target required for disease control. 3 sources. https://clstr.news/cluster/argentina-faces-rise-in-preventable-diseases-amid-low-vaccination-rates ### 2026-08-24: Argentina reports record influenza cases driven by A(H3N2) variant Argentina reports a record 790,523 influenza cases driven by the A(H3N2) subclade K variant, with children under 10 accounting for nearly half of all infections. 30 sources. https://clstr.news/cluster/argentina-faces-intense-flu-season-with-h3n2-variant ### 2026-08-22: Argentina reports record influenza cases in a decade Argentina reports a decade-high influenza record with over 790,000 cases in early 2026, driven by the A(H3N2) K subclade, which has heavily impacted children under 10. 15 sources. https://clstr.news/cluster/argentina-records-highest-influenza-cases-in-a-decade ### 2026-07-27: Sixth Flu A Death Confirmed in Santa Fe Province, Argentina Santa Fe province reported its sixth influenza A death in 2026; all victims were high‑risk and unvaccinated, while overall Flu A cases are declining. 4 sources. https://clstr.news/cluster/sixth-flu-a-death-confirmed-in-santa-fe-province-argentina --- Cite as: Argentina influenza surge and declining vaccination rates. CLSTR, https://clstr.news/situations/influenza-outbreak-in-argentina