Key Points

Dengue

• Dengue activity remained low throughout French Guiana. DENV-2 continues to circulate at low levels; one confirmed imported case of DENV-3 was reported.

Malaria

• The number of malaria cases was moderate and on the rise over the past two weeks, with 19 cases recorded (versus a total of 16 in S52 and S01). Of these 19 cases, 1 was caused by P. falciparum (imported from the African continent) and 18 by P. vivax, including 1 relapse.

• In total, 23 cases of malaria have been recorded since the beginning of the year, reaching the levels observed during the last two months of 2025. Of note is the identification of a transmission cluster in the municipality of Maripasoula (outside the town center) with 12 cases recorded since the end of the year (S52 to S03, provisional data).

Acute respiratory infections

• Flu-like illness: Increased flu activity continues in French Guiana, with the number of visits to primary care centers rising again over the past two weeks and a stable situation in emergency departments, though at a high level. The circulating subtypes identified are Influenza A(H1N1)pdm09 and A(H3N2). Since the start of the pre-epidemic phase, 17 severe cases have been recorded (provisional data).

• Bronchiolitis & COVID-19: Activity related to bronchiolitis and SARS-CoV-2 was low throughout the territory.

Diarrhea

• Diarrhea-related activity was low in the CDPS, local hospitals, and the emergency departments of the three hospitals.