In contrast to the vaccine failure event in the United States, what should be paid attention to in vaccine cold chain transportation?

According to the National Broadcasting Corporation (NBC) report, Michigan health officials said on the 19th that nearly 12,000 doses of the new crown vaccine had failed due to temperature control issues on the way to Michigan. We all know that vaccines, biological products, are very "delicate", too high or too low temperature will cause the vaccine to fail. Especially in the case of vaccine shortage, if the vaccine is wasted due to temperature control during transportation, it will undoubtedly increase the burden of the re-coronavirus epidemic. The number of vaccines issued every year in China is 500 million to 1 billion bottles per tube. Li Bin, deputy director of the National Health Commission, said: "The country’s vaccine production this year has doubled compared with last year. This year, China’s vaccine production is nearly The largest supply in five years." Not only does the transportation of the new crown vaccine require professional cold-chain transportation of medicines, other vaccines such as rabies vaccines, flu vaccines, etc., need to be transported under strict temperature and humidity control to avoid failure. It can be seen that the control of temperature and humidity during vaccine transportation is the top priority.

Looking back at the US vaccine incident, what can we reflect on and learn from it?

1. During transport, strict management of temperature and humidity control

  In the transportation process, strict temperature and humidity control management is required, especially temperature control. In many cases, everyone will pay attention to avoiding "overheating" during transportation, but ignoring that "overcooling" can also lead to vaccine failure. The second U.S. vaccine incident was because the temperature was too low and the vaccine was ineffective. For example, the suitable temperature for rabies vaccine is 2 ℃ -8 ℃, if it is below zero, it will fail. The requirement of not "overheating" is not difficult to achieve. It can be achieved by increasing the thickness of the foam insulation layer and adding more ice packs. However, it is more difficult to achieve the requirement of not "overcooling", and a more comprehensive cold chain packaging technology is required.

2. The data recording and monitoring

One of the challenges of vaccine transportation logistics is to keep the temperature constant. However, in real life, the temperature is not absolutely stable. Due to the impact of environmental changes during transportation, it will fluctuate. In logistics and transportation, once the temperature is interrupted or changed greatly, it will also cause the vaccine to fail. Moreover, most vaccine failures cannot be distinguished in appearance, so we need to use some "assistants"-temperature and humidity recorders or thermohygrometers to measure temperature and humidity at fixed time intervals and record these data. The HK-J9A100 series temperature and humidity data logger adopts high-precision sensors to measure temperature and humidity, automatically stores data at user-set time intervals, and is equipped with intelligent data analysis and management software to provide users with long-term, professional Temperature and humidity measurement, recording, alarm, analysis, etc., to meet customer's different application requirements for temperature and humidity sensitive occasions.

The HK-J8A102/HK-J8A103 multifunctional digital data logger is an industrial-grade, high-precision temperature and relative humidity measuring instrument. The instrument is powered by a 9V battery and uses an external high-precision probe. It has the functions of measuring humidity, temperature, dew point temperature, wet bulb temperature, data recording, and data retention to freeze the current readings. It reserves the Internet of Things ioT function. The USB interface is convenient for exporting data. Easily respond to the demand for accurate temperature and humidity measurement in various occasions.

3. Establish professional support of vaccine logistics and transport system

China has a vast territory and the climate in each region is different. At this time, if vaccines are to be transported over long distances, it is also a huge challenge to logistics. It is also necessary to establish a professional vaccine material transportation system suitable for different geographical environments and climatic conditions. The challenges faced by the cold chain transportation of medicines.

4. Training of transportation personnel

The quality training of transportation personnel is also very important. It is necessary to understand both logistics and medicine. At present, most professional colleges do not have medicine logistics majors. Logistics or medicine talents recruited by enterprises need follow-up training.