ISSN 1476-0584. doi:10.1586/14760584.4.5.725 (英语). Barnett, Elizabeth D; Wilder-Smith, Annelies; Wilson, Mary E. Yellow fever vaccines and international
February 2020 [2020-03-01]. (原始内容存档于2020-03-06). Liu, Ying; Gayle, Albert A.; Wilder-Smith, Annelies; Rocklöv, Joacim. The reproductive number of COVID-19 is