6 Case-fatality rates in Italy and China show an increasing trend with advancing age—from 3.5% to 3.6% (age 60-69 years), 8.0% to 12.8% (age 70-79 years) to 14.8% to 20.2% (age 80 years and above). 7 Several explanations for the relatively low rate and severity of disease in children have been postulated.
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