Chikungunya in Argentina: 97% of cases in Noroeste Argentino
Argentina's Ministry of Health reports that chikungunya cases have peaked and are now declining, with 97% of the disease burden concentrated in the northwestern region. While the outbreak initially stemmed from travel, local transmission has been confirmed in several provinces.
Why it matters
Understanding the spatial distribution and transmission patterns of mosquito-borne diseases is essential for effective public health intervention and resource allocation.
According to the Argentina Ministry of Health, during the current season, 13,230 suspected cases of chikungunya fever were reported; of these, 3,618 were classified as confirmed, probable, or probable via epidemiological link.
Reported cases with a travel history originated in Bolivia, Brazil, Paraguay, and Cuba.
The first cases without travel history were identified in Salta province amidst the occurrence of imported cases linked to travel to Bolivia, confirming the presence of local transmission.
Throughout the season, a sustained acceleration in chikungunya fever cases was observed up to EW 16, driven by increases in both confirmed and probable cases; this indicated a scenario of intensifying transmission alongside improved detection. Following the peak in cases during Epidemiological Week (EW) 16 (N=446), a progressive and sustained decline has been observed in confirmed, probable, and under-investigation cases alike.
Chikungunya epidemic risk: A call to action
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