Vaccine and Immunology

Vaccines & Autism

The capacity of a vaccine to have the desired positive effects on immunized individuals within a certain group under optimal use circumstances is known as vaccine effectiveness. Weighing the potential risk of an adverse event following immunization (AEFI) with a vaccine against its potential benefits—such as promoting health and well-being and protecting against sickness and its physical, psychological, and economical consequences—is necessary. The likelihood that an unfavorable or undesirable event would occur and the degree of the harm that will ensue to the health of vaccinated persons within a specific community after receiving a vaccine under optimal usage settings are known as vaccine-associated risk.