Cold chain logistics refers to a mode of logistics and transportation that maintains the quality of food (fresh or frozen) or the transportation efficiency of other products (drugs), reduces the loss of processing, storage, transportation, distribution and retail, and keeps the goods at a certain temperature all the time. It consists of cold chain processing, cold chain processing, cold chain storage, cold chain transportation and distribution, cold chain sales, etc. It involves refrigeration technology, storage technology, detection technology and facilities such as cold storage, refrigerated trucks, incubators and refrigerated display cabinets.
At present, the commodities used in cold chain logistics are generally divided into three categories: first, primary agricultural products, including vegetables, fruits, meat, poultry, eggs, aquatic products, flowers and so on; The second is processed food, such as frozen food, meat, aquatic products, cooked food, ice cream, dairy products and so on. Third, special commodities, such as medicines and vaccines.
Compared with traditional logistics, cold chain logistics has higher technical requirements and greater capital investment, and has become a key area supported by the state. The core of cold chain logistics is not completely "cold", but "constant temperature", because different products need different storage temperatures.
With the discovery of coronavirus pneumonia-19 virus in the cold chain environment, in order to meet the needs of epidemic prevention and control, relevant departments have been strengthening the supervision of cold chain operation of epidemic prevention measures, which has brought great challenges to the cold chain logistics industry, especially the food cold chain. Facing the severe market environment and strict epidemic prevention requirements, how to actively respond? How to turn crisis into opportunity and realize upgrading and development? This is a problem that cold chain import enterprises and logistics enterprises must face.
In 2020, an novel coronavirus epidemic swept the world, seriously affecting all walks of life. Under the epidemic situation, food safety has become the biggest concern of the public, especially imported cold chain food is suspected to be one of the possible transmission channels of the virus.
On June 5438+1October 65438+July, 2020, China Center for Disease Control and Prevention isolated live virus from the positive samples of imported frozen food packaging carried by the staff during the follow-up investigation of the epidemic situation in COVID-19.
This is the first time in the world to isolate live coronavirus pneumonia-19 virus from cold chain food packaging, which proves that novel coronavirus can survive in cold chain food packaging for a long time.