That might be an arguably plausible explanation for people to be skeptical of recently developed vaccines.
But most of the vaccines that are recommended for all preschool children in the US are not recent, long predating the opioid crisis.
The MMR vaccine became recommended in 1971, replacing separate vaccines for measles, mumps, and rubella.
Pertussis, diphtheria, and tetanus vaccination become recommended in 1914, 1926, and 1938, respectively and were combined into the DTP combo vaccine in the '40s.
Polio vaccination became recommended in 1955.
There is no good reason to be skeptical of any of those or other similar ones I've left off. We've got 60-100+ years of widespread use which has generated a ton of data spanning multiple generations showing they are safe and effective.
But most of the vaccines that are recommended for all preschool children in the US are not recent, long predating the opioid crisis.
The MMR vaccine became recommended in 1971, replacing separate vaccines for measles, mumps, and rubella.
Pertussis, diphtheria, and tetanus vaccination become recommended in 1914, 1926, and 1938, respectively and were combined into the DTP combo vaccine in the '40s.
Polio vaccination became recommended in 1955.
There is no good reason to be skeptical of any of those or other similar ones I've left off. We've got 60-100+ years of widespread use which has generated a ton of data spanning multiple generations showing they are safe and effective.