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December 29, 2022

Aluminum and Asthma

A retrospective study cannot establish a causal relationship between aluminum in vaccines and asthma, so it cannot be assumed that vaccines caused the observed asthma.

September 29, 2022

Do childhood vaccines cause ashtma?

Retrospective studies are very good at finding associations that need further exploration and testing. Retrospective studies cannot establish a causal relationship so further research is needed.

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