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Australian flight attendant Rochelle Crossley was vaccinated against the new Sinopharm Chinese crown pneumonia vaccine in the United Arab Emirates where she worked.When she returned to Australia, she was questioned by her compatriots. The airport staff told her: “You know there is no vaccine.” It was like he was “doing something wrong”.
The treatment of Chinese vaccines in the third world is much better. Rizky Sugih, a vegetable vendor in Bandung, Indonesia, voluntarily participated in the Beijing Kexing Company vaccine clinical trial. He said there are children in the family, and he fears his family will be infected, and the governor of West Java province has also been vaccinated. “The leaders are also on the field, what are you afraid of?”
The recent good vaccine news from US companies Pfizer and Modena has grabbed Western media headlines and also spurred the rise in US stocks. It’s just a global pandemic. No one will be truly safe before everyone is safe. When the epidemic ends, it will depend on when developing countries receive the vaccine, not from the West. While Chinese vaccines are unlikely to be adopted by Westerners, when it comes to the third world, European and American vaccines are believed to suffer.
The Australian flight attendant vaccinated China and went home like that
It is true that the vaccine technologies developed by Pfizer and Modena are truly brand new. These two types of vaccines are both nucleic acid-based vaccines and the immune effect is theoretically more direct and effective than traditional inactivated vaccines and there is no fear of the risk of infection caused by residual viruses.
However, regardless of price and supply problems, the storage conditions for nucleic acid-based vaccines are much stricter than traditional vaccines. You can use them on a small scale. If you want to reverse the trend in the global pandemic, you may not be able to. Nucleic acid vaccines are more prone to fail. The Modena vaccine can be stable for 30 days in an environment between 2 and 8 degrees Celsius; Pfizer vaccines must be stored in an ultra-low temperature environment of minus 70 degrees for safe use, which is colder than the Antarctic winter.
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This means that the application of the new corona vaccine faces enormous logistical challenges. Minus 70 degrees is far from the temperature that normal refrigeration equipment can reach, and most of the production capacity in the global refrigeration supply chain (cold chain) cannot meet the demand. Whereas the cold chain itself only occupies a small group in the logistics system, ultra-low temperature refrigeration logistics is a small group of the small group and rare. What we are talking about now is the delivery of vaccines to every corner of the world, from pharmaceutical factories, highways, airports, airplane cabins, airports, highways, hospitals or clinics. Each link must be kept at very low temperatures, otherwise the vaccine will not be valid The price of an ultra low temperature freezer usually ranges from $ 10,000 to $ 15,000.
Although Pfizer has designed a special vaccine transport box, using dry ice to provide an extremely low temperature, this type of transport box can only store vaccines for 10 days. It cannot be opened more than 2 times a day and the number of vaccine doses in the box is limited to 1,000 to 5,000. In other words, it is difficult for Pfizer vaccines to serve rural areas because even if vaccines are passed on, there will be 500 doses of waste in a small country of 500 people. Not to mention that it is difficult for medical staff to judge how many doses of vaccine are most appropriate when opening the box twice a day.
Such difficult conditions are enough to cause headaches in developed countries in Europe and the US The lack of infrastructure in developing countries is even more “useless to think”. Modena vaccine does not require ultra-low temperatures and is difficult to store, but it is still doubtful whether it can be transported to remote destinations within the 30-day shelf life and complete the injection for those in need. Even more frightening is that the new corona vaccine needs to be injected with the second shot about two weeks after the first shot, so the difficulty of all of the above problems must be multiplied by 2.
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The United States has no plans to compete with Chinese vaccines globally
The Chinese vaccine is now on the scene. China Kangxinuo Biological Company’s adenovirus vector vaccine can be stable for a long time from 2 to 8 degrees; Sinopharm and Kexing vaccines are traditional inactivated vaccines, which are relatively easy to store, so that the Kexing vaccine can be placed at high temperatures of 37 degrees. In 1 month, huge hassle and costs were spared immediately. Chinese vaccines are naturally the first choice in developing countries with weak infrastructure and financial conditions, although data on their effectiveness is not yet available.
The research and development layout of the new Chinese corona vaccine is also actively geared towards developing countries and is undergoing 3 clinical trials in 20 countries in Asia, Africa and Latin America. Of course, China’s promotion of domestic vaccines is not only for public welfare, but for itself as well. The global spread of the Chinese vaccine not only widens the circle of friends, but also directly fills the void left by the United States. The US has no plans to compete globally with Chinese vaccines and Biden has been …
(Extract)
[Esclusivo per abbonati a testo completo: obiettivo grandangolare cinese e straniero: la battaglia segreta del vaccino sino-statunitense contro il terzo mondo diventa il campo di battaglia principale]
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Author: Lian Zhaofeng
Column name: China and foreign countries
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