Easyfour-TT Paediatric Vaccine is a vaccine for the active immunization against diphtheria, tetanus, pertussis, and Haemophilus Influenzae type b. It helps stimulate the immune system to produce high levels of protective antibodies against these serious diseases in babies and young children.In babies, Easyfour-TT Paediatric Vaccine is injected into the thigh muscles. Whereas, in older children, the injection is given into the arm muscle. This injection is to be administered by your child’s doctor only. The first 3 doses of Easyfour-TT Paediatric Vaccine are to be given 4 weeks apart at 6, 10, and 14 weeks of age followed by booster doses given when your child turns 16-24 months, 5 to 6 years, 10 years, and 16 years for complete protection. Your child’s doctor might prefer rescheduling the vaccine if your child has a more serious illness.