Reinfection by the SARS-CoV-2 Gamma variant in blood donors in Manaus, Brazil by Prete, CA, Buss, LF, Buccheri, R, Abrahim, CMM, Salomon, T, Crispim, MAE, Oikawa, MK, Grebe, E, da Costa, AG, Fraiji, NA, do P. S. S. Carvalho, M, Whittaker, C, Alexander, N, Faria, NR, Dye, CM, Nascimento, VH, Busch, MP, Sabino, EC