Table 4.

Summary of studies on the reproduction number of the gamma variant

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)