SOCIAL QUESTIONS|health|medical science|epidemiology · SOCIAL QUESTIONS|health|illness|infectious disease
- imdhíonacht tréada de bharr vacsaíne Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- imdhíonacht tréada vacsaín-spreagtha Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- vaccine-induced herd immunity
- en
- Definition "herd immunity in a population reached through vaccination" Reference "COM-Terminology Coordination, based on: Omer SB, Yildirim I, Forman HP. 'Herd Immunity and Implications for SARS-CoV-2 Control' (17.3.2021). JAMA. 2020;324(20):2095–2096. doi:10.1001/jama.2020.20892"
- Comment Herd immunity, also known as indirect protection, community immunity, or community protection, refers to the protection of susceptible individuals against an infection when a sufficiently large proportion of immune individuals exist in a population. In other words, herd immunity is the inability of infected individuals to propagate an epidemic outbreak due to lack of contact with sufficient numbers of susceptible individuals. It stems from the individual immunity that may be gained through natural infection or through vaccination. The term herd immunity was initially introduced more than a century ago. In the latter half of the 20th century, the use of the term became more prevalent with the expansion of immunization programs and the need for describing targets for immunization coverage, discussions on disease eradication, and cost-effectiveness analyses of vaccination programs.Eradication of smallpox and sustained reductions in disease incidence in adults and those who are not vaccinated following routine childhood immunization with conjugated Haemophilus influenzae type B and pneumococcal vaccines are successful examples of the effects of vaccine-induced herd immunity.