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Respiratory virus trends in Latin America

Updated 10 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-26 12:59 UTC → 2026-09-28 22:52 UTC · added removed

By late August, Chile recorded its highest respiratory virus positivity rate in three years, reaching 57.9% during epidemiological week 34 (August 23–29, 2026). The Ministry of Health noted that 34. Rhinovirus accounted for 33.5% of detections and RSV for 27.6%. Pediatric populations have been heavily impacted; in the Ñuble region, the health service reported 25 hospitalizations of children under 15 during that week, were the highest weekly figure for 2026 in that area. primary drivers. In early September, health authorities in Paraguay reported that Paraguay, 28 deaths were associated with linked to the simultaneous circulation of rhinovirus, RSV, and metapneumovirus over a four-week period. Total deaths linked to respiratory viruses in Paraguay have reached 194 for 2026, with metapneumovirus, bringing the most vulnerable groups being children under two, adults over 60, and those aged 5 2026 total to 19. 194 deaths. In Costa Rica, the National Children's Hospital (HNN) has experienced high faced extreme demand, with occupancy rates, rates reaching up to 122% capacity for respiratory patients. By late September, the and a fully occupied Intensive Care Unit. The HNN has recorded 13 deaths this year due to respiratory infections, year, primarily affecting in children under four. Causes of death include four, caused by RSV, influenza A, Covid-19, rhinovirus, and adenovirus. Nationally, the Ministry of Health has recorded over 6,500 cases of severe acute respiratory infections (SARI) have been recorded in children under five. In Argentina, health authorities responded to a surge in illnesses, particularly RSV. In Neuquén, pediatric consultations increased by 187% between epidemiological weeks 30 and 35. Consequently, the Ministry of Health in Córdoba extended vaccination deadlines for pregnant individuals and prioritized infants. In Brazil, the Ministry of Health reported 1,454 hospitalizations for SARI hospitalizations in recent weeks, with weeks and 233 deaths associated with respiratory viruses so far in 2026. Rhinovirus is the predominant virus, followed by RSV and metapneumovirus. Most admissions Admissions most frequently involve children under two (28%) and adults over 60 (23%). In Argentina, while influenza cases are declining—with a higher proportion of influenza B being detected—RSV remains the primary cause of SARI hospitalizations. During epidemiological week 36, RSV accounted for 326 out of 891 studied hospitalization cases, significantly outpacing influenza and SARS-CoV-2. The impact of RSV is concentrated among children under two. In Tucumán, health officials continue to monitor respiratory viruses alongside international measles trends.

Versions

  1. 2026-09-28 22:52 UTC Respiratory virus trends in Latin America
  2. 2026-09-26 12:59 UTC Respiratory virus trends in Latin America
  3. 2026-09-08 18:14 UTC Respiratory virus trends in Latin America
  4. 2026-09-05 10:16 UTC Respiratory virus trends in Latin America
  5. 2026-09-04 17:58 UTC Respiratory virus trends in Latin America
  6. 2026-08-31 23:56 UTC Respiratory virus trends in Latin America
  7. 2026-08-14 20:42 UTC Latin America respiratory health updates
  8. 2026-08-11 19:04 UTC Latin America respiratory health updates
  9. 2026-08-07 13:53 UTC Latin America respiratory health updates
  10. 2026-07-28 15:20 UTC Latin America respiratory health updates
  11. 2026-07-28 15:19 UTC Latin America respiratory health updates

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