1. Re-emergent COVID-19 in Zhejiang province;BBT,2022
2. The Implement Suggestion. Bureau for Disease Control and Prevention;BDCP,2020
3. The transmission of SARS-CoV-2 at Hailian Cold Storage was identified;CCTVN,2020
4. Several batches of imported fruits were positive for COVID-19 on their surfaces or packaging, December 22;CCTVN,2021
5. The transmission of SARS-CoV-2 at Hangzhou province;CCTVN,2022