This medication is a combination of vaccines against diphtheria, tetanus (lockjaw), pertussis (whooping cough), polio, and Haemophilus influenzae B infection. Vaccination is the best way to protect against these life-threatening infections. Vaccines work by causing the body to produce its... This combination of vaccines is usually used in infants and children who are between 6 weeks and 4 years old. View More Info

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