It seems like there might be a misunderstanding in your question regarding the PCV vaccine and its relationship to liver health.
The Pneumococcal Conjugate Vaccine (PCV) is primarily used to protect against infections caused by the bacterium Streptococcus pneumoniae, which can lead to pneumonia, meningitis, and other serious infections. It does not have a direct role in preventing liver disease.
If you're referring to a specific aspect of liver health, vaccination, or another context, could you please clarify your question? This way, I can provide you with the most accurate information.