1130-5274 1130-5274 S1130-52742020000300007 10.5093/clysa2020a25 España España 00 00 2020 00 00 2020 31 3 165 169 European Center for Disease Prevention and Control 2020 2020 ILTCPN 2020 IMSERSO 2016 Lee 2020 20 4 4 384-5 OMS 2018 Red de Vigilancia Epidemiológica ISC-CNE 2020 2020 TVE 2020