Certain vaccines in history have saved lives, but universally most vaccines are rarely effective.
List of studies:
https://www.oatext.com/Pilot-comparative-study-on-the-health-of-vaccinated-and-unvaccinated-6-to-12-year-old-U-S-children.php
"The high-titer measles vaccine, was withdrawn after several randomized trials in west Africa showed that it interacted with the diphtheria-tetanus-pertussis vaccine, resulting in a significant 33% increase in child mortality [11]. Evidence of safety from observational studies includes a limited number of vaccines, e.g., the measles, mumps and rubella vaccine, and hepatitis B vaccine, but none on the childhood vaccination program itself."
https://pubmed.ncbi.nlm.nih.gov/29962551/
"Comparing cohorts with universal vaccination to those without vaccination, relative prevalences were 0.24 (95% confidence interval, CI: 0.16-0.35) for HBsAg and 0.23 (95% CI: 0.17-0.32) for HBcAb."
Difference of 0.24 (at most).
https://www.jpands.org/vol21no4/miller.pdf
"After pneumococcal and hepatitis A vaccines were added to the immunization schedule, babies began receiving 4,925 mcg of aluminum during the same age period—a 25% increase (Figure 1).9,10 In 2011, CDC recommended that pregnant women receive a pertussis vaccine (Tdap), which also contains aluminum.11 Studies show that aluminum crosses the placenta and accumulates in fetal tissue.12 Thus, millions of babies in utero, infants, and young children were injected
with, and continue to receive, unnaturally high doses of neurotoxic substances—mercury and aluminum—long after unsuspecting parents were led to believe that vaccines were purified and made safe."
We know that aluminum and mercury can cause all kinds of issues in humans when its in the blood stream, yet we continue to add it to vaccines.
“Our results...suggest that a causal relationship may exist between the amount of aluminum administered to preschool children at various ages through vaccination and the rising prevalence of autism spectrum disorders.”
If you examine the timelines, you'll notice that deaths from disease went down BEFORE vaccines were introduced and went back up after:
https://www.collective-evolution.com/2019/02/24/robert-f-kennedy-jr-exposes-bill-gates-his-relationship-with-big-pharma/
An article that lists a bunch of studies:
https://www.newsmax.com/FastFeatures/vaccines/2015/03/23/id/631823/