Figure 3.

Personal protective measure score (PPMS) among students with and without symptoms of influenza-like illnesses PPMS was calculated from students’ frequency of wearing facemasks, physical distancing, hand hygiene, surface disinfection, and avoiding crowded places. We assigned scores of 2, 1 and 0 to students who always/frequently, sometimes, and never implemented a specific measure. We then calculated the PPMS by adding the sum of the scores for each of the 5 measures; therefore, the highest potential PPMS was 10, and the lowest was 0.