The vaccine forces the body's immune system to produce antibodies, just like when the body is exposed to a disease... but since the vaccine only contains dead or weakened microbes such as viruses or bacteria, it does not cause disease and does not put a person at risk of its complications... Most vaccines are injected into the body, but some vaccines are used through the nose or through a safe spray... preventing disease and saving human lives (which is days are more important than ever before)... Today, various types of vaccines protect against at least 20 diseases such as diphtheria, tetanus, pertussis, influenza and measles... The total of these vaccines saves the lives of 3 million people annually... They are very sick, it is recommended to inject some vaccine to prevent the vaccine... Reducing the spread of the disease... How does the vaccine work? This vaccine cooperates with the body's natural defense mechanism in creating immunity and reduces the risk of contracting the disease. The immune system reacts after receiving the vaccine: - Recognizes an invading microbe such as a virus or bacteria.... - Produces an antibody.... A protein that is naturally produced by the immune system and fights disease is called an antibody.... - The disease and how to fight it is registered in the immune system... It is disease-free.... The immune system is designed to remember pathogens. It makes the vaccine effective.... The vaccine prevents the onset of the disease instead of treating the disease after infection.... How does the vaccine create immunity in individuals and communities?... This vaccine trains the body's defense mechanism - the immune system - and prepares it to identify viruses and bacteria and deal with them. It becomes vulnerable and the possibility of spreading the disease from one person to another will decrease the pathogenic agent in other people.. which cannot be obtained, the vaccinated remain immune to the disease in question due to other diseases.... this situation is called "collective or herd immunity".. the herd only works when the majority of people receive the vaccine.... at the same time, herd immunity does not provide immunity against all diseases that can be prevented with a vaccine.... for example, tetanus is not transmitted from most bacteria in the surrounding environment... those who are not vaccinated against this disease are at risk are.... **Footnote:** This general information is a limited summary of diagnostic, therapeutic and/or drug information.. It is not intended to be comprehensive and should be used as a tool to help the user understand and/or evaluate potential diagnostic and therapeutic options.. This information does not contain all information about conditions, treatments, drugs, side effects or risks that may apply to a particular patient.. and should be unique.. Risks or benefits of drug use.. This information does not represent any treatment or drug as safe, effective. or approved for the treatment of a specific patient does not approve.... I, Dr. Mehdi Afshari, disclaim any warranty or liability related to this information or its use... > * Among the medical services provided in the office are periodical examinations of children, periodical monitoring of children's growth and physical development, treatment of various infectious, digestive and respiratory diseases in children and adolescents, nutritional counseling, education and periodical care of premature babies, monitoring and treatment of all periodical problems during infancy, periodical mental and physical evaluation of children. > *special services of Dr. Mehdi Afshari: specialized office circumcision, home visit and online consultation* > > *Practice address: No. 193, South Mehrabad, Southern Air University, Tafarsh East, Tehran > > *Contact number: 021-66602506*