4hw.com.cn: Changchun Changsheng biological problem vaccine attracts the attention of all walks of life, and the vaccine naturally becomes a topic of discussion. Generally, when we inject the vaccine, we will have a batch number, which is generally the production date plus the batch number, so how to determine the validity of the vaccine? Let's take a look next!
What does the vaccine batch number represent
A series of batch numbers will be seen for vaccine injection. The production batch number and production date are not exactly the same, but they are generally the production date plus the batch number. This batch number is the production time and production team of the vaccine, and the drug information cannot be queried.
The batch number of the vaccine is the production date of the vaccine, and the additional production batch, that is, one production date may produce 2-3 batches of products. Each batch is marked with a number and placed behind the batch number. The batch number of the vaccine is generally the month and year plus the serial number. For example, batch number: 20050608-5, indicating the fifth batch of vaccine produced on June 8, 2005. 201304003, this is the third batch in April 2013. Different units may have different meanings, but they are basically related to the production date.
The batch number of Changchun Changsheng biological problem vaccine is: according to the information of the former State Food and drug administration, the potency index of DPT vaccine with the batch number of 201605014-01 produced by Changchun Changsheng and 201607050-2 produced by Wuhan biological does not meet the standard.
How to confirm whether the vaccine that your baby vaccinates expires has a vaccine batch number, so you can trace the vaccine batch number to see the production date and expiration date of your child's vaccination.
And the children's vaccination manual has vaccination time, through calculation, we can get whether the children's vaccination vaccine is within the validity period, so it can be traced completely whether the baby's vaccination vaccine expires.
How to determine the effective period of vaccine
Before a vaccine is approved for marketing, it needs to go through a long-term stability test to determine the validity period of the vaccine. According to the requirements of relevant technologies, it needs to be reduced for at least six months on the basis of the stability test requirements before it can be used as the validity period of the vaccine.
For example, the specification of hepatitis B vaccine stipulates that the validity period is 2 years, and the validation time of the actual stability test must be more than 2.5 years. If the hepatitis B vaccine is still safe and effective after 2 and a half years of storage, the period of validity of the hepatitis B vaccine approval is 2 years. As a result, the vaccine does not fail as soon as it expires, but has a buffer of at least six months.
What happens when the vaccine expires
In theory, a vaccine with a little overdue period (within 6 months) will not cause additional adverse reactions, because the 'effective use time' of the vaccine is at least 6 months longer than the 'effective period' of the vaccine.
If the vaccinated vaccine has exceeded the effective service life of the vaccine, first of all, it depends on the health status of the baby and whether it has been affected. It is better to conduct a comprehensive inspection. Secondly, the overdue vaccination violates the standard of vaccination work, which belongs to "vaccination implementation error". The vaccination clinic should compensate the children accordingly.