Explanation
•The first dose of the hepatitis B vaccine should be given at birth and the second dose at one month.
•The first dose of MMR (Measles, mumps, rubella) should be given at age 12-15 months.
•The first dose of DTaP (Diphtheria, tetanus, and pertussis) should be given at 2 months.
•The polio vaccine should be given at 2, 4, and 6-18 months.