Measles in Argentina, and other events
Measles
According to the National Epidemiological Bulletin (BEN), a total of 19 measles cases have been confirmed, distributed between the Autonomous City of Buenos Aires (CABA) and the Province of Buenos Aires (PBA).
Most of the cases are concentrated in Commune 14 of Buenos Aires City, where 10 cases have been confirmed. Almost all of them (9 cases) are linked to the first case detected in February 2025 through direct contact or community transmission in the residential area or in a hospital waiting room. Five of the cases reside in condominium buildings in Commune 14. The other five reside in Communes 1, 4, and 12.
Nine cases have been confirmed in PBA to date. Of these, six have clear epidemiological links with the cases in CABA or with each other. One case corresponds to contacts identified in the epidemiological investigation, and another corresponds to a hospital contact in the same transmission chain. In only one of the nine cases is it still not possible to determine the link with the transmission chains.
Dengue fever
Through the first three months of 2025, the Ministry of Health reports that a total of 5,077 confirmed cases of dengue were recorded during the 2024/2025 dengue season—which began in EW 31 of 2024 (the beginning of August).
Ninety-eight percent of these cases (4,956 cases) had no travel history and are distributed as follows: 3,542 confirmed cases in the Central Region, 865 in the Northwest Region (NOA), 362 in the Northeast Region (NEA), 142 in the Southern Region, and 45 in Cuyo. The 117 cases with a travel history correspond to people who had traveled to Brazil, Cuba, Mexico, Venezuela, Thailand, India, Peru, Paraguay, and Colombia.
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Other
Among the events that saw a higher-than-expected increase in cases, tuberculosis (TB) stands out, with a 38% increase in reported cases so far this year compared to previous years.
Psittacosis, a zoonosis caused by Chlamydia psittaci and whose main reservoir is birds, continues to show a progressive increase, with a sustained upward trend in recent years.