The difference in reproductive rate (ratio of secondary cases to primary cases) did not reach statistical significance (Fisher’s exact test p = 0.053) between primary schools (0.2 or 20/102) compared to secondary schools (0.36 or 29/77), but was significantly different ( p = 0.022) between symptomatic (0.37 or 36/98) compared to asymptomatic primary cases (0.16 or 13/81).
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SARS-CoV-2 transmission in educational settings during an early summer epidemic wave in Luxembourg, 2020.
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0.0530
0.0530