An outbreak of severe acute respiratory syndrome coronavirus 2 caused by the Gamma variant of concern infected 24/44 (55%) employees of a gold mine in French Guiana (87% symptomatic, no severe forms). The attack rate was 60% (15/25) among fully vaccinated miners and 75% (3/4) among unvaccinated miners without a history of infection.
Keywords: BNT162 vaccine; COVID-19; French Guiana; Gamma variant of concern; SARS-CoV-2; breakthrough; coronavirus disease; gold miner; outbreak; respiratory infections; severe acute respiratory syndrome coronavirus 2; vaccines; variants; viruses; zoonoses.