In our modern lives today, due to climate, environmental dust and diseases, many people are now facing health problems and infectious diseases. Many supporters say vaccination is safe and one of the greatest scientific advances in prevention and health of the 20th century. However, there were many different arguments between the pros and cons of this useful prevention method. Nevertheless, due to numerous arguments and evidence for patient prevention cases from the Centers for Disease Control and Prevention (CDC), the World Health Organization (WHO), or any other practical health issue, vaccines were invented to prevent diseases and infectious diseases, because the effective means and benefits are much greater. Say no to plagiarism. Get a tailor-made essay on “Why violent video games should not be banned”?Get the original essayFirst of all, the vaccine is an amount of medicine mixed with different ingredients such as antibodies or small pathogenic organisms in different uses for diseases. The role of a vaccine is to deliver that amount of an injection into our body for "good health", and use it to create healthy, active immunity against the body's resistance. There are many ways to use this "magic prevention" in the patient's body. For example, the original and classic way of using vaccines is to administer an injection. However, due to modern technological advancements in this century, in some cases people can "deliver" the amount of vaccine directly into our mouth or through nasal spray. To be more specific, there are few diseases that people can seek oral vaccines for, such as rotavirus or polio. Nevertheless, capturing the number of pathogens orally can cause the weakened virus to be active again in our body. When taken orally, there are only small amounts of pathogens or medications, but they can enter our body and be absorbed as quickly as they can. However, the oral vaccine is not helpful enough for the patient because not all vaccines can be directly oral and most can be injectable. As for the nasal spray, it is only used to replace the flu vaccine and is made from weakened flu vaccines. The instructions for using the nasal spray are quite simple, the doctor can spray into the patient's nose, the medicine can pass through the nose to the body in order to protect it from the flu season which can be easily affected. In this case, the level of protection between the nasal spray and the flu vaccine is the same and safe enough for patients, it is up to each individual whether they want to choose different ways of inserting the flu vaccine . When it comes to infectious diseases, this type of illness caused by viruses or small organisms passes directly through the body to create symptoms ranging from normal increase to death. Some specific infectious diseases such as malaria, HIV, malaria, and yellow fever can affect the entire body and cause many symptoms in patients. Especially, tuberculosis is a type of respiratory infectious disease, everyone should check the tuberculosis test to find out whether they already have tuberculosis or not. Because BCG known as Bacillus Calmette-Guérin is a vaccine against tuberculosis, it can create active immunity against thisdisease. Secondly, our powerful prevention method can save many children's lives from different types of diseases or infections. Some serious illnesses can kill thousands of children because a child's immune system needs certain pathogens or antibodies in vaccines to protect their body and health from the natural environment, disease, or infection. According to the American Academy of Pediatrics, it states that most childhood vaccines are 90%-99% effective in preventing disease.[1] “The Centers of Disease Control (CDC) estimated that 732,000 American children were saved from death and 322 million cases of childhood illnesses were prevented between 1994 and 2014 through vaccination. »[2] For example, some diseases like polio, pneumonia, chicken pox, meningococcus, mumps and rotavirus really need vaccines. To be concise, polio is a type of disease that can infect person to person because the poliovirus lives in an infected person, enters the body, and comes in direct contact with the stool. Sometimes poliovirus can infect a normal person through a small amount of fluid from coughing or sneezing. Therefore, not only children should be vaccinated to protect their health, but also adults, everyone should prepare their body against this poliovirus. Because the result of poliovirus in infected people can lead to paralysis that prevents some or all parts of the body from moving. Third, vaccines are effective ways to prevent various diseases due to ample evidence for different patient cases. “As a result, the WHO estimates that in 2003, 38.3 million cases and 607,000 deaths were prevented through the use of pertussis vaccination”[3]. Most deaths occur in countries with low vaccination rates and high mortality rates. Further progress can be made by increasing coverage with three doses of diphtheria, tetanus and pertussis vaccine in infants and providing booster doses where appropriate. »[4] The reason vaccines are effective is because they are carefully examined and checked by doctors, scientists or hospitals before giving them to patients. Additionally, talking about vaccine safety concerns the ingredients people use and how they are activated in our bodies against disease. One of the most common vaccine ingredients used by scientists or doctors is thimerosal. This type of element involved in mercury-containing vaccines has been used for multidose vials intended for patients. As the term multidose vials implies adding more in order to prevent the growth of germs or bacteria that may remain when a syringe needle enters a vial while a vaccine is being prepared for administration. According to the Journal of Pediatric Psychology from January to February (2012) by Barile JP, Kuperminc GP, Weintraub ES, Mink JW and Thompson WW on the study of brain function, behavior, language, coordination and thimerosal. [5] “This study evaluated whether prenatal thimerosal exposure or thimerosal exposure between birth and 7 months of age was associated with seven specific neuropsychological outcomes in children aged 7 to 10 years.”[6]After the investigation, the result established no positive link. with thimerosal that affected the function of the brain or parts of the body, memory, behavior or language of children. As a result, they can prove that thimerosal is not a toxic ingredient in vaccines, but simply a preservative preventing.