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Table 4 Summary of studies on the reproduction number of the gamma variant

From: The reproduction rate of severe acute respiratory syndrome coronavirus 2 different variants recently circulated in human: a narrative review

Study

Location

Study date

Method

Estimated R0

Other findings

Naveca et al.

Amazonas, Brazil

November, 2020 to January, 2021

Using real-time RT-PCR Ct value as a proxy of viral load

 

Ct of P.1-positive patients = 19.8

Ct of P.1 negative patients = 23.8

Faria et al.

Amazonas, Brazil

November, 2020 to December, 2020

Dynamic modeling which integrates genomic information and mortality data

 

Ct lowered by 1.43 (using E genes) and 1.91 (using N genes)