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RSV vaccine rollout expands in Americas

Updated 2 times since CLSTR started tracking revisions of this situation.

What changed

2026-07-31 16:02 UTC → 2026-08-01 00:43 UTC · added removed

Since mid‑2023, countries across the Americas have broadened RSV immunisation for seniors, pregnant women and high‑risk infants, and introduced the long‑acting monoclonal antibody nirsevimab. Real‑world U.S. data show a 75 % drop in RSV admissions among seniors receiving the Arexvy vaccine. Brazil’s public system now vaccinates pregnant women and recommends the vaccine for all over‑70s, while a national campaign reports over 21 000 severe paediatric cases and 246 deaths in early 2026. In July 2026, Brazil and Argentina began municipal programmes delivering single‑dose nirsevimab to pre‑term and other high‑risk infants. Chile’s winter health campaign recorded a 45.4 % weekly test positivity, with RSV accounting for 22.9 % of detections and 97.4 % immunisation coverage (120,198 doses), while pediatric and adult ICU occupancy approached critical levels. New developments include Ecuador’s first rollout of the RSV vaccine for pregnant women, beginning in the Cotopaxi region, and Brazil’s continuation of routine prenatal RSV vaccination from the 28th week of gestation alongside other maternal vaccines. These actions extend the In late July 2026 a regional strategy surge in RSV activity was reported. Panama recorded 13 child deaths, eight under two years old, prompting renewed calls for vaccination of pregnant women and the elderly. Chile saw RSV become the leading respiratory virus in week 29, with detections rising to protect newborns through maternal antibodies 22.9 % and sustain continued high vaccine monoclonal‑antibody coverage (97.4 %). Paraguay and Argentina warned of low influenza‑vaccine uptake during the 2026 among high‑risk groups, while Spain’s Valencian Community announced a €32.1 million purchase of 70 000 RSV antibody doses for the 2026‑2027 season. Health authorities across Latin America continue to stress preventive measures as the season progresses.

Versions

  1. 2026-08-01 00:43 UTC RSV vaccine rollout expands in Americas
  2. 2026-07-31 16:02 UTC RSV vaccine rollout expands in Americas
  3. 2026-07-30 23:33 UTC RSV vaccine and Nirsevimab rollout expands in Americas

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