1816-8949 1816-8949 S1816-89492023000100109 10.18004/anales/2023.056.01.109 Paraguay Paraguay 00 04 2023 00 04 2023 56 1 109 112

1 2015 31 377-83 2 2014 82 806-13 3 2022 1 1-6 4 2014 651 e9-13 5 2012 87 403-7 6 1994 7 213-64 7 Centers for Disease Control and Prevention 2022 8 2020 1 001-13 9 2015 02 002 002 10 2021 13 8 8