Scientists discover several factors influencing waning immunity with the Pfizer COVID Vaccine

By | November 22, 2021
New research from Japan found several risk factors associated with greater waning immunity after vaccination. Old age and smoking were amongst those with some of the lowest antibody titers. Women more than men were also more likely to experience a rapid decline in antibody levels 3 to 6 months after receiving their second Pfizer-BioNTech dose.