Overview
- Argentina’s latest national bulletin reports 18 sequenced A(H3N2) cases between December 18 and January 4, with nine identified as subclade J.2.4.1 (K).
- Detections span five jurisdictions — Buenos Aires province, CABA, Mendoza, Neuquén and Santa Cruz — across patients of varied ages in both inpatient and outpatient care.
- Within the nine K cases, five people were hospitalized and four were treated as outpatients, and authorities say no fatalities have been recorded so far.
- Travel histories show two recent trips to Europe, three domestic trips and four patients without travel, a pattern officials say suggests possible local circulation.
- Health authorities are reinforcing surveillance and clinical guidance, narrowing routine sequencing of returning travelers, and emphasizing flu vaccination, noting most sequenced patients lacked recent immunization.