Vaccinating children with multiple vaccines at once or on accelerated schedules damages their developing immune systems.
Children's immune systems encounter thousands of antigens every single day from food, dust, bacteria, and viruses, a typical vaccine schedule introduces fewer antigens than a single ear infection. Immunologists have calculated that a baby's immune system could theoretically handle 10,000 simultaneous vaccines without being overloaded. Studies comparing vaccinated children on standard, accelerated, and delayed schedules show no difference in autism, allergies, asthma, or immune dysfunction rates. A 2013 study in Pediatrics of 1.2 million Danish children found that children who received vaccines on the accelerated schedule had fewer hospitalizations for infections, not more. The fear stems from a misunderstanding of immune capacity: the immune system isn't like a cup that fills up, but rather a network that strengthens with use. Delaying vaccines to reduce 'immune stress' actually leaves children vulnerable during high-risk windows.