https://www.cnn.com/2019/11/27/health/chickenpox-vaccine-meningitis-study/index.html

Chickenpox vaccine reactivates in two boys, causing rare meningitis more commonly seen in unvaccinated kids

By Michael Nedelman, CNN

(CNN) Doctors described what they believe are the first known cases of meningitis due to reactivation of chickenpox vaccine in two 14-year-old boys who received both recommended doses, according to a paper published Wednesday in the journal Pediatrics(Article in link)

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For more:  

https://madisonarealymesupportgroup.com/2017/12/02/scottish-doctor-gives-insight-on-lyme-msids/HPV stimulated a latent Lyme infection to reactivate in young women.

https://madisonarealymesupportgroup.com/2018/12/04/is-the-chickenpox-vaccine-creating-a-shingles-epidemic/