Overview of Vaccine Drug Delivery System

Abstract

Until the 20th century, infectious diseases were the leading cause of death and disability worldwide, and this is still the case in much of the developing world. Immunisation has played a central role in radically reducing the incidence of many dangerous diseases, and some diseases have been wiped out entirely (e.g. smallpox). This article presents the World Health Organization’s (WHO) recommendations on the use of various vaccines. Vaccines prevent an estimated two –three million deaths worldwide every year. But, a further 2 million lives could be saved annually with better global vaccine coverage. Vaccines prevent an estimated two – three million deaths worldwide every year. But, a further 2 million lives could be saved annually with better global vaccine coverage. The purpose of vaccination is to produce immunity. Vaccines contain the same germs that cause disease. (For example, measles vaccine contains measles virus.) But they have been either killed or weakened. A vaccine provides a conducted exposure to a pathogen, training and encourage the immune system so it can fight that disease quickly and effectively in future. The national Vaccine Injury Compensation Program covers routine vaccines for children (against a total of 16 diseases). Vaccines are safe and effective. Because vaccines are given to millions of wholesome people. Vaccines have one of the greatest impacts on public good health. The prevention of disease has had an enormous impact on commercial development by limiting the costs of curative care and saving billions of dollars in countries where diseases have been well controlled or eliminated.