Nation Texas runs out of monoclonal antibody treatment to fight omicron: Live COVID-19 updates December 28, 2021 Celina Tebor, USA TODAY Comments Off on Texas runs out of monoclonal antibody treatment to fight omicron: Live COVID-19 updates The Texas state health department has run out of a key treatment, the monoclonal antibody sotrovimab, to fight the omicron COVID-19 variant.