Immunization Coverage in WHO Regions: A Review Article

نویسندگان

Amirhosein Ghazizadeh Hashemi Department of Otorhinolaryngology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Gholamreza Khademi Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Science, Mashhad, Iran.

Maryam Ajilian Abbasi Ibn-e-Sina Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.

Masumeh Saeidi Students Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

Rahim Vakili Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Science, Mashhad, Iran.

چکیده مقاله:

In 1974, the World Health Organization (WHO) established the Expanded Program on Immunization (EPI) to ensure that all children have access to routinely recommended vaccines. Since then, global coverage with the four core vaccines (Bacille calmette guérin vaccine [for protection against tuberculosis], Diphtheria-tetanus-pertussis vaccine [DTP], Polio vaccine, and Measles vaccine) has increased from