The number of COVID-19 cases in Illinois has risen sharply over the last two months, from about 2,000 new cases a day in late September to 10,000 or so currently. In this report we evaluate whether there have been significant changes in the behaviors that facilitate the spread of the disease. The COVID States Project has been conducting a 50-state survey roughly once a month since April about attitudes and behaviors around COVID-19. Here we focus on public-health related behaviors that facilitate/inhibit the spread of the disease. It has become apparent that behaviors of particular importance are (1) those which bring people into indoor proximity; and (2) mask wearing.