0034-7531 0034-7531 S0034-75312020000500034 Cuba Cuba Cuba 00 00 2020 00 00 2020 92 1 2020 94 91-5 2 World Health Organization 2020 3 World Health Organization 2020 4 2020 92 6 6 568-76 5 2020 20 269-70 6 2020 53 3 3 371-2 7 2020 4 6 6 414-6 8 2020 9 1-14 9 2020 323 23 23 2427-9 10 2020 323 23 23 2386-7 11 2017 8 1960 12 2020 17 1-8