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Yes Pfizer/Moderna didn't do weekly swab tests and only tested the ones with symptoms unlike Astrazeneca. The other big difference is the sample size is much b
by vjuvvadi123 6y ago
Yes Pfizer/Moderna didn't do weekly swab tests and only tested the ones with symptoms unlike Astrazeneca.
The other big difference is the sample size is much bigger with Astrazeneca one and is across continents as well.