Herd Immunity   * Immunization of a large population set;   * Provides a protective measure for the population;   * Makes it harder for a disease to spread;   * Fewer people left to be infected;   * Protects individuals who cannot be vaccinated;   * Children, individuals with immune issues, and the ill.   * Proportions vary depending on disease type. In the discussion about immunization as an issue, it is important first to discuss herd immunity as a phenomenon implied to protect populations from infectious diseases. As a result of immunization, herd immunity develops, with fewer people being infected. Herd immunity is necessary for preventing the most vulnerable population groups from being infected. These include children who are too young to get vaccinated, individuals with immune diseases, as well as people that are currently ill and cannot get vaccinated. Types of Immunity Active Immunity:   * Disease exposure triggers the immune system;   * Antibodies are produced as a response to the disease;   * Is long-lasting and can last an entire life. Passive Immunity:   * A person is given antibodies to a disease;   * The immune system does not produce antibodies;   * Antibody-containing products are used. Immunity is differentiated into active and passive depending on how it developed in the beginning. On the one hand, there is active immunity, which develops as a result of disease exposure triggering an immune response of the body. It can last a long time, including the entire lifespan of people. On the other hand, there is passive immunity, which is a result of immunization (often short-term). The immune system in this case does not produce antibodies. Effect of Vaccinations   * Eradication of major infections (e.g., smallpox) (Greenwood, 2014);   * A positive impact on productivity, overall health, and cognitive development;   * Adaptation to modification of disease epidemiology;   * Increase economic productivity;   * Protection against diseases within herd immunity;   * Strengthening of the immune system of people. For public health, immunizations represent an effective tool for protecting the population from the adverse impact of preventable diseases. Their prevention leads to a positive impact on productivity, the overall health of the population, and the cognitive development of children. Within the context of immunization as a real preventable measure, the latter creates a herd immunity environment through strengthening people’s immune system. It should also be mentioned that there is a growing trend in opposing vaccinations in favor of natural treatments. Worldwide effects   * Addressing deaths due to infection epidemics;   * Minimization of polio endemic in most countries (CDC, 2017);   * Aversion of deaths in low-income regions;   * Prevention of measles, yellow fever, rubella, hepatitis B, etc.;   * The increased cost-effectiveness of healthcare;   * The decreased occurrence of virus infections. The global effect of immunizations has shown to be extremely positive. With the advancements in the testing and research of vaccines, the population has higher chances of being protecting itself from preventable diseases. Such adverse illnesses such as measles, rubella, yellow fewer, hepatitis B, and others have decreased in occurrence with the administration of vaccinations. In