 Chembio Diagnostics Inc NASDAQ: CEMI received a 28.3 million purchase order from Brazils Bio-Manguinhos to purchase Chembios DPP SARS-CoV-2 Antigen tests for delivery during 2021. The Antigen test detects the SARS-CoV-2 antigen, which indicates an active COVID-19 infection, in 15-20 minutes using a minimally invasive nasal swab. 