$CEMI COVID-19 related Float 28.3 M Short Interest 11.03 ~ 14.66 2 years high $15.89 News: Chembio Diagnostics Receives SAHPRA Approval for DPP SARS-CoV-2 Antigen Test https://finance.yahoo.com/news/chembio-diagnostics-receives-sahpra-approval-130000218.html News: Chembio Files For FDA Emergency Use Nod For COVID-19 Antigen Test