Vaccines are products that are typically given to children in order to prevent them from severe, often fatal diseases. They prepare your body to fight the disease faster and more efficiently by activating your body's natural defences. Vaccines boost your immune system's ability to fight illnesses by triggering an immunological response to certain diseases. If the virus or bacteria ever infects your body again, your immune system will already be prepared to combat it. Vaccines can protect your kid from infections that can cause serious harm or death, particularly in those with immature immune systems, such as infants. Vaccinating your child is critical. If not, diseases like measles, diphtheria, and polio, which were previously eradicated in many nations, would resurface. Many parents are concerned that their child's immune system may be overburdened by many immunizations. In fact, a cold or flu or sore throat can strain your child's immune system more than immunizations will.