Johnson (illness) was placed on the reserve/COVID-19 list Tuesday, Aaron Wilson of Sports Talk 790 Houston reports.
Johnson can return in time for Sunday against the Chargers if he is vaccinated and capable of producing two negative tests more than 24 hours apart. With fellow defensive linemen Maliek Collins, DeMarcus Walker, Jonathan Greenard and Derek Rivers all on the COVID list as well, the Texans are in danger of being incredibly thin at the position Sunday. Johnson will try to clear protocols, so he can provide depth and possibly start against the Chargers.