One lesser-known fact about COVID-19 vaccines is the concept of sterilizing immunity. Sterilizing immunity occurs when an individual not only develops protection against the symptoms of a disease but also prevents the infection from taking hold in the body. While COVID-19 vaccines have proven highly effective in preventing severe illness and reducing transmission, they may not always confer sterilizing immunity.
This means that vaccinated individuals, while well-protected against severe disease, can still carry and potentially transmit the virus to others. This emphasizes the importance of vaccination not only for personal protection but also for the broader goal of achieving community immunity and reducing the overall spread of the virus. Public health measures such as vaccination, along with other preventive measures, contribute to creating safer environments for everyone.