In the course of the vaccination process, a number of people are concerned that multiple vaccines can interfere with each other and reduce their effectiveness. This perception has led some parents to hesitate to plan vaccinations for their children, even deliberately avoiding arrangements for multiple vaccines. However, this is a mistake.
According to scientific research and a wealth of empirical data, multiple vaccines are generally not used to interfere with each other or to reduce their effectiveness. A number of authoritative medical research institutions, such as the World Health Organization (WHO) and the United States Centers for Disease Control and Prevention (CDC), have conducted in-depth research and observation. The results show that the immune response from multiple vaccines at the same time, whether in terms of levels of antibody generation, immunocell activation or in terms of immunisation memory-building, varies very little compared to the individual vaccinations. For example, measles, mumps and rubella (MMR) vaccinations, as well as pox vaccines, are often combined in child vaccination programmes. A large number of inoculations have shown that, as a result of these vaccinations, antibodies against measles, mumps, rubella and pox virus in children are well developed and their immune effects are not adversely affected by each other and can be effectively prevented.
Vaccines have been developed and produced through rigorous clinical trial designs, which include assessments of the safety and effectiveness of multiple vaccines simultaneously. Pharmaceutical companies and scientists use rigorous experimental methods to compare the effects of multiple and separate vaccinations. For example, it combines the five vaccine components of pertussis, diphtheria, tetanus, polio and haemophilus influenzae type b. During the clinical trial phase, long-term follow-up was carried out for the group of children who were vaccinated against the same five components as the corresponding single-saplings. The results show that the group of children who are also vaccinated against the V5 have been successful in immunisation, that the prevention of the five diseases has been comparable to that of single-synthesis children, and that there has been no increase in immunization failures or adverse reactions due to interference between vaccine components. This amply demonstrates that under scientifically sound formulations and processes, a variety of vaccine components can work in synergy during the same vaccination process without interfering with the immune effect.
The human immune system has a strong adaptive and coping capacity. When multiple vaccines enter the human body at the same time, the immune system is able to identify the antigens carried by different vaccines and initiate the respective immune response mechanisms. Like an efficient “immunization plant”, multiple “production lines” can be handled at the same time to produce unique “products” (antibodies and immune cells) for different “orders” (vaccine antigens). For example, when both hepatitis B and influenza vaccines are administered, the immune system produces hepatitis B antibodies for the surface antigens of the hepatitis B virus, while the antigens of the influenza virus produce influenza-specific antibodies. These immune responses are carried out in an orderly manner in different immunocellular sub-groups and tissues and are not confused or inhibited by the simultaneous presence of multiple antigens.
Of course, in certain exceptional circumstances, such as the extreme inoculation of the recipient itself, or a serious allergic reaction to a vaccine component, it may be necessary to make appropriate adjustments to the vaccination programme under the professional guidance of a physician, including the choice of vaccine type, the interval between vaccinations, etc. But this is not because of the interference between vaccines, but because of the specific health conditions of the individual affected.
Multiple vaccinations are in most cases safe and effective and do not interfere with each other and reduce immunization effectiveness. Parents and the general public should believe in the scientific basis and professional advice, follow the regular vaccination procedures and obtain the timely vaccination required for themselves and their families to better prevent infectious diseases and maintain their health.
