According to a new report child’s immune response to vaccination is reducing due to the disclosure of a chemical called polychlorinated biphenyl (PCBs) a chemical used in industries.
There is lower anti-body protection where the exposure to PCB level is higher.
Children have adequate level of antibody to protect them from various diseases such as diphtheria, tetanus but even they require antibody protection from pollutants, especially PCB.
These substances act as toxic to immune system so needed to prevent.
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Via: sciam