The Texans placed Hewitt (undisclosed) on the reserve/COVID-19 list Monday.
It's not yet clear whether Hewitt has tested positive for COVID-19 or whether he'll be available for Sunday's game against San Francisco. The 28-year-old has logged double-digit tackles in each of the last two games, but Connor Strachan could see additional playing time if Hewitt, Kamu Grugier-Hill (knee/illness) and Tae Davis (illness) are unavailable Sunday.