21 januari: China bevestigd dat een nieuw virus van mens tot mens overgedragen kan worden January 23, 2022January 23, 2022 admin Corona Tijdlijn Events 4781967 {2474701:Q8YSDLEC} items 1 apa default asc https://lennartquispel.com/wp-content/plugins/zotpress/ Kuo, L. (2020, January 21). China confirms human-to-human transmission of coronavirus. The Guardian. https://www.theguardian.com/world/2020/jan/20/coronavirus-spreads-to-beijing-as-china-confirms-new-cases