SARS as a disease, is/was less insidious than Covid. Someone infected with SARS was the most infectious *while symptomatic* and this let it be contained more easily than Covid, which largely spread through asymptomatic carriers.
From one of the many Lancet papers
>The new coronavirus SARS-CoV-2 is less deadly but far
more transmissible than MERS-CoV or SARS-CoV.
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