摘要
To the Editor:Since December 2019,the coronavirus pandemic has been the deadliest disaster with over 6.5 million people confirmed to have died in less than 3 years.[1]The coronavirus disease 2019(COVID-19)has created the biggest global crisis in generations.Children are less likely to develop severe illness than adults,but children with cancer are more likely to develop a serious clinical course and even die after the infection.[2,3]Since early 2022,the Omicron variant has become the main variant of SARS-CoV-2 across the globe.In the first three years of the pandemic when China has taken very strict infection control measures.
基金
supported by the VIVA China Children’s Cancer Foundation,and the American Lebanese and Syrian Associated Charities(to C.-H.P.and C.C.).