According to WHO, 4 million lives can be spared by fully using underused vaccines.
Hepatitis B is infection of liver caused by virus and spreads through contact of infected blood or body fluids and personal items.
Pregnant woman can spread Hepatitis B to her baby at birth.
Diphtheria is due to bacteria that produces toxin and blocks the airway. It can also cause heart problems and paralysis of muscles needed for swallowing.
Tetanus or lockjaw is caused by toxin produced by bacteria that enters through a cut wound.
Tetanus cause stiffness of muscles and may lead to locking of the jaw.
3 out of 10 people who have tetanus die from it.
Pertussis or whooping cough is caused by bacteria and can last for weeks.
Pertussis is most serious for babies who can get pneumonia, seizures, brain damage, or die.
Two thirds of kids under 1 year who get pertussis are hospitalized.
Polio is caused by virus spread by contact with feces.