Introduction: Edward Jenner invented a method to protect against smallpox. In this method, liquid was extracted from the blister of a person suffering from cowpox and then the skin of another person was inoculated.The next generation of vaccines that are commonly prescribed today were invented in the early twenty century. These vaccines include whooping cough, diphtheria and tetanus vaccines.These three vaccines were combined with each other and released as a triple DTP vaccine.Vaccines are often injected and sometimes even oral, such as the polio vaccine.Vaccination at the appointed time protects us from the risk of contracting certain diseases, this immunity will exist not only during childhood but throughout our life
Methods: Germs are tiny organisms that cause disease. Many microbes cannot live independently, they are only able to live in the body of a host. There are two types of germs that make us sick, viruses and bacteria. Bacteria emit toxins that can damage or destroy body cells and cause disease in humans. Viruses do not emit poison, but increasing their number causes the destruction of cells. Diseases caused by microbes are called infectious diseases.Vaccines contain substances that stimulate the body to produce antibodies against pathogenic microbes. These antibodies protect a person from getting an infection even if he has come into contact with the pathogenic microbe. Sometimes it is also called vaccination (immunization) because vaccines cause immunity. Most vaccines are made up of microbes that need to be protected against.
Results: Vaccines are safe, but sometimes they can cause reactions, sometimes minor problems such as redness or pain in the injection area occur
Conclusion: The more people are immune to a disease, the less likely it is to spread germs from unprotected people to others. This is called herd immunity.