Overview
- Buenos Aires issued an epidemiological alert after a marked rise in whooping cough, with Region Sanitaria XI reporting sharp increases this year.
- The national epidemiological bulletin for week 42 says 2025 pertussis activity is roughly three times higher than in 2024.
- Through week 40, surveillance recorded 63 confirmed cases and 252 classified as probable nationwide.
- Authorities confirmed at least four pediatric deaths, all under age two, including three without the recommended shots and one newborn whose mother was not vaccinated during pregnancy.
- Mendoza released a precautionary alert to strengthen case notification and vaccination despite no active local outbreak, while guidance emphasizes five days of azithromycin for cases, antibiotic prophylaxis for close contacts, school exclusion until five days of treatment, and pregnancy doses from week 20.