Figure 1: Principal Component Analysis (PCA) of demographics data of positive cases

Figure 2: Incidence rate of positive cases to COVID-19 on the total number of processed swabs normalized to 1000, in the examined district of Naples (circles) and in Campania region (squares). The vaccination trend in Italian population (light green line: I dose; dark gren line II dose) during the same period is shown

Figure 3: Periodical time of restriction zone

Figure 4: Incidence rate of COVID-19 on the total number of processed swabs normalized to 1000 and cumulated in the different restriction zones, in the examined district and in Campania region. **** represent p < 0.0001, *** represent p < 0.001 (chi-square test)

Figure S1: Interpretation of RAT antigen test results. Test device showing two colored lines, control (C) and test (T), indicate positive COVID-19 antigen result (a); one colored line control (C) indicate negative COVID-19 antigen result (b); one colored line test (T) or no presence of colored lines indicate not valid test result

Characteristics

Results

Total number

Positive cases

Rapid SARS‑CoV‑2 antigen tests

4778

85 (1.8%)

Age (yrs) median (Q1 - Q3)

38 (24 - 53)

35.5 (23.3 - 52.8)

Gender (M)

2128 (44.5%)

45 (53%)

Not resident in Campania

447 (9.3%)

8 (9.4%)

Asymptomatic

4523 (94.6%)

22 (25.9%)

Symtomatic

255 (5.4%)

63 (74.1%)

Body temperature ≥ 37.5 °C

91 (1.9%)

12 (14.1%)

Rhinorrhea, chugh and/or dyspnea

107 (2,2%)

48 (56.5%)

Nausea, abdominal pain and/or diarrhea

54 (1.1%)

0

Loss of taste and smell

3 (0.7%)

3 (3.5%)

Table 1:Demographics data and characteristics of participants. Results were expressed as number and percentage