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. 2022 Nov 28;9(12):ofac642. doi: 10.1093/ofid/ofac642

Table 1.

Attack Rates of Influenza A(H3N2) and Severe Acute Respiratory Syndrome Coronavirus 2

Infection Attack Rate
(Age 0–89 y)
Attack Rate
(Age 2–14 y)
This study
 Influenza A(H3N2) 20.1% (18.4–21.8) 26.8% (23.7–29.9)
 SARS-CoV-2 13.6% (12.2–15.1) 15.3% (12.7–17.8)
2009 influenza A(H1N1) pandemic [11] 20.1% (18.8–21.4)

Data are presented as attack rate (95% confidence interval).

Abbreviation: SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.