COVID-19 report calls for tighter cold chain measures

        

      

      

        
          By Wang Xiaoyu | 
          CHINA DAILY |
          Updated: 2021-07-21 09:54
          
          
          
          
        


        
      

      

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   Disease control workers collecting samples from cold packaging in Qingdao, Shandong province on Sept 26, 2020. [Photo provided to China Daily] 
 
 


        


        
        
      

        
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