Trump says some childhood vaccines will be split into separate shots

https://www.youtube.com/watch?v=VZZDSBxKvXo

I'm quite disappointed with Trump.  This is an issue that has been very thoroughly studied.

https://www.youtube.com/watch?v=O5ETZy1pmiI

Google AI:

There is no credible scientific evidence demonstrating that vaccines cause autism. Decades of rigorous global research involving millions of children have consistently shown no causal link or association between vaccination and autism spectrum disorders. [1, 2, 3]

The overwhelming scientific and medical consensus is supported by major global public health organizations, including the National Academy of Medicine, the Children's Hospital of Philadelphia, and the National Medical Association. [1, 2, 3]

The Origin of the Myth

The belief that vaccines cause autism stems from a single 1998 case series published by Andrew Wakefield in The Lancet. The study suggested a link between the Measles, Mumps, and Rubella (MMR) vaccine and autism based on just 12 cherry-picked children. It was later discovered that the data was fraudulent and methodologically invalid. The Lancet fully retracted the paper, and Wakefield lost his medical license. [1, 2, 3, 4]

Key Scientific Findings

Since then, numerous large-scale epidemiological and cohort studies have definitively debunked the link across three major areas of concern:

The MMR Vaccine: Massive global studies tracking millions of children across the U.S., Denmark, the U.K., and Japan found absolutely no difference in autism rates between vaccinated and unvaccinated children. [1, 2]
Thimerosal (Mercury Preservative): Although thimerosal was removed or significantly reduced in childhood vaccines globally as a precaution over two decades ago, autism rates continued to rise. This demonstrates that the preservative does not trigger autism. [1, 2, 3]
Immune System Load: Research confirms that an infant’s immune system is fully capable of handling multiple vaccines at once. Cumulative exposure to childhood vaccine antigens does not negatively impact neurodevelopment or increase autism risk. [1, 2]

Why the Misconception Persists

The primary driver of the myth is temporal coincidence. The first noticeable signs of autism typically manifest in toddlers around the exact same age that children receive their routine early childhood vaccinations. Because these two events happen around the same time, it can easily lead to the false assumption that one caused the other. [1, 2, 3]

The Actual Causes of Autism

Autism is a complex neurodevelopmental condition that begins well before birth. According to the Autism Science Foundation, the primary causes include: [1, 2]

Genetics: Strong hereditary factors account for most cases, with single gene variants and familial risk playing massive roles.
Prenatal Environment: Structural brain differences originate in the womb and are tied to factors like advanced parental age, maternal metabolic disorders, premature birth, and prenatal exposure to certain infections or severe air pollution. [1, 2, 3]

The rising prevalence of autism diagnoses in recent decades is not due to vaccines, but rather to broadened diagnostic criteria, improved universal screening, and significantly higher awareness among parents and healthcare providers. [1, 2]