On 13 October 2020 the French health authorities officially reported 13 laboratory confirmed cases of Mayaro fever in French Guiana France In September 2020 the Institut Pasteur de la Guyane IPG member of the French National Reference Laboratory for arboviruses identified two cases of Mayaro virus infection MAYV confirmed by reverse transcriptase polymerase chain reaction RT PCR and one probable case found positive for Mayaro antibodies The case patients presented dengue like symptoms and joint pains and tested negative for dengue by RT PCR