A vaccine is a medical product... Although vaccines, like any other medicine, are designed to protect against disease, they can have side effects.

Most vaccination side effects are mild, such as pain, swelling, or redness at the injection site. Some vaccines are associated with fever, rash, and pain. Serious side effects are rare, but may include seizures or a fatal allergic reaction.

A side effect refers to a possible adverse drug effect from vaccination.

See more : Best Infectious Disease Specialist

American infants (one year and younger) receive more than 10 million vaccines annually....A significant number of infants suffer serious and fatal illnesses and medical events such as sudden infant death syndrome (SIDS) in their first year of life....In addition, congenital diseases are more likely to manifest themselves in the first year of life....Determining when a medical event is directly related to vaccination.

Types of vaccination side effects

To understand the potential range of side effects from vaccination, it is useful to compare a vaccine with relatively few side effects, such as the Haemophilus influenzae type B vaccine, with a vaccine that has many side effects, such as the smallpox vaccine, which is rarely used (to military personnel and others who may be the primary target of an unpromising attack)..

Haemophilus influenzae type B is a bacterium that can cause dangerous infections such as meningitis, pneumonia, epiglottitis, and sepsis. It is recommended that children receive Hib vaccination several times from the age of two months.

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Smallpox is a dangerous infection that is fatal in 30-40% of cases and is caused by the variola major or variola minor virus... No cases of smallpox have been reported since the 1970s.. According to the World Health Organization, this disease has been eradicated.

Findings related to the side effects of Hib and smallpox vaccinations, presented below, were collected from the Centers for Disease Control and Prevention.

View more: List of vaccines that we should take before traveling

Side effects of hepatitis vaccine (Hib)

• Redness, warmth or swelling at the injection site (up to 1 in 4 children)
• Fever over 38 degrees Celsius (1 in 20 children)

No serious side effects have been reported in connection with the Hib vaccine.

Side effects of smallpox (cow pox) vaccine

Mild to moderate problems

• Mild rash that lasts 2 to 4 days.
• Swelling and tenderness (sensitivity to touch) of lymph nodes that persists 2 to 4 weeks after the blister heals.
• Fever greater than 38 degrees (in 70% of children and 17% of children and 17% of 39% of adults) or more than 17% of adults and less than 2% of adults).
• Secondary blisters in other parts of the body (about 1 in 1900).

Moderate to severe problems

• Severe eye infection or eye infection due to vaccine virus spread in the eye.
• Incidence of solid rash all over the body (1 in 4,000 people).
• Incidence of severe rash in people with eczema (1 in 26,000 people).
• Can cause permanent brain damage... (1 in 83,000 people).
• Severe infection starting at the vaccination site (1 in 667,000 people, usually in immunocompromised people).
• Death (1-2 in 1 million people, usually in immunocompromised people).

How can you find out the side effects of different vaccines?

After you or your child is vaccinated, your health care provider will give you a booklet called a Vaccine Information Statement (VIS)... Your health care provider will likely tell you about possible side effects.

Packet brochures provided by the vaccine manufacturer also contain information about its side effects.. In addition, these brochures usually include the occurrence of side effects in the experimental and control groups during premarket evaluations of the vaccine.