Dating waiting intervals

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However, if a dose was administered 5 or more days earlier than the recommended minimum interval between doses, it is not valid and must be repeated.The repeat dose should be spaced after the invalid dose by the recommended minimum interval.Mainly because little safety or efficacy data exist on doses given before 6 weeks of age, and the vaccines aren't licensed for this use.The data that exist suggest that the response to doses given before 6 weeks is poor and in some cases (such as Haemophilus influenzae type b vaccine) the response could be detrimental to the infant by possibly reducing the immune response to subsequent doses of Hib conjugate vaccine.Avoid such errors by knowing the minimum intervals and ages for routinely given vaccines.You can look up such information gov/mmwr/pdf/rr/rr6002.pdf, pages 36-37.

An accelerated schedule is acceptable as long as minimum ages and minimum intervals are observed for each dose.

Once you have the child back on schedule, use the recommended ages and intervals on the childhood schedule.

In this case you can give the child the first set of recommended vaccines at age 3 months and then bring him back at age 4 months and give the second set of vaccinations.

The Interval() method can be written without the window prefix.

The first parameter is the function to be executed.

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