2307-3349 2307-3349 S2307-33492021000100041 10.18004/rspp.2021.junio.41 Paraguay Paraguay Paraguay 00 06 2021 00 06 2021 11 1 41 47

1 2020 323 13 13 1239-1242. 2 Pan American Health Organization / World Health Organization 2020 3 2020 69 993-8 4 2020 8 2 2 61-9 5 Istituto Superiore Sanità 2020 6 2020 7 2020 8 2020 113 8 8 531-7 9 Organización Mundial de la Salud 2020 10 National SARS-CoV-2 Serology Assay Evaluation Group 2020 20 12 12 1390-400 11 2020 58 10 10 e01694-20 12 2020 13 Pan American Health Organization / World Health Organization 2020 14 Centers for Disease Control and Prevention (CDC) 2020 15 2020 15 11 11 16 2020 324 6 6 603-5 17 2020 76 405-7 18 2020 69 993-8 19 2016 62 448-55 20 2020 276 30-7 21 2015 192 597-604 22 2017 7 17275 23 National Institute for Health Research. 2020 24 2020 370 m3026 25 2020 26 2020 27 2020 2 2 2 28 2020 29 2020 30 2020 383 24 24 2389-90 31 2020 32 2020 144 110055 33 2020