Letter to the editor: Epidemiology of the SARS-CoV-2 variant Omicron BA.2 – vigilance needed
Huang, Jing and Zeng, Guangting, Eurosurveillance, 27, 22-00254 (2022), https://doi.org/10.2807/1560-7917.ES.2022.27.13.2200254