Scientific consensus and research
Numerous large-scale studies and reviews have confirmed that vaccines do not cause SIDS.
The incidence of SIDS is the same in children who are vaccinated and those who are not, providing further evidence against a causal link.
Some studies even suggest that vaccines may have a protective effect against SIDS, potentially reducing the risk by up to 50%.
The peak age for SIDS (2 to 4 months) coincides with the age when many routine infant vaccines are administered. This overlap in timing can lead to misperceptions, but it does not indicate a causal relationship.
https://www.chop.edu/vaccine-education-center/vaccine-safety/vaccines-and-other-conditions/sudden-infant-death-syndrome-sids