Tag: early vaccines

How Long Is a Vaccine Month?

Are you ever concerned that your kids will get their vaccines too early or too late?

Vaccine intervals are typically based on weeks and "months."
Vaccine intervals are typically based on weeks and “months.” But how long is a month?

For example, if your child needs a booster dose of a vaccine in a month, just how long is that?

Does it depend on which month you are in?

For intervals of 3 months or less, you should use 28 days (4 weeks) as a “month.”

Ask the Experts on Scheduling Vaccines

In general, while we often use calendar months, because it is more convenient, you can use a minimum interval of 28 days or 4 weeks as a full month, as long as we are only counting up to three months.

So a second flu shot after a dose on January 1st could be done as early as January 29th. That’s technically one month (28 days, 4 weeks) later. And no, you wouldn’t have to repeat the second dose if you got it on February 1st, as we are typically worried about the minimum intervals or spacing and not about getting the dose a little late.

For intervals of 4 months or longer, you should consider a month a “calendar month”: the interval from one calendar date to the next a month later.

Ask the Experts on Scheduling Vaccines

And just count calendar months if you are counting more than 3 months. So if you got a vaccine on January 1 and needed another 4 months later, you would return on May 1.

Why switch to using “calendar months” for longer intervals? With longer 28 day intervals, scheduling mistakes will likely be made.

More on Spacing and Scheduling Vaccine Doses

At What Age Should Kids Get a Meningococcal Vaccine?

Knowing when to give or get a vaccine doesn’t usually cause any confusion.

You simply have to check the immunization schedule.

Take the meningococcal vaccines, for example. Most parents and pediatricians understand that kids get them before entering middle school and again before going off to college. And some high risk kids should get them even earlier, as infants.

Simple, right?

At What Age Should Kids Get a Meningococcal Vaccine?

Actually, there are some things that make it a little more complicated than it should be…

Why?

  • some overnight and summer camps are actually starting to require a dose of meningococcal vaccine for younger kids, even though this is not a formal recommendation of the CDC or AAP
  • some parents might request a dose of meningococcal vaccine for younger kids going to overnight and summer camps, even though this is not a formal recommendation of the CDC or AAP
  • some folks are misunderstanding recommendations that campers be up-to-date on all immunizations as a recommendation that they get an early meningococcal vaccine
  • getting an early dose, before age 10 years won’t count as the middle school dose, and will need to be repeated
  • some states have very strict laws on timing, like that kids have to get their meningococcal vaccine before starting 6th grade, but only after they turn 11 years old, which creates a problem for those kids who start 6th grade before they are 11 years old
  • many folks don’t understand the recommendations for the MenB vaccines

What’s the answer?

It is not to skip or delay your child’s meningococcal vaccine, of course.

Older teens and young adults are at much higher risk of meningococcal disease than younger school age children.
Older teens and young adults are at much higher risk of meningococcal disease than younger school age children.

Instead, states should likely institute their meningococcal vaccine laws to require a dose before entering 7th grade, that way, most will have plenty of time to get it while they are in 6th grade. Or at least keep to the standard minimum age of 10 years for a dose to count towards middle school requirements.

What about a meningococcal vaccine for campers?

“In New York State, PHL Article 21, Title 6, Section 2167 also requires the notification of campers and parents about recommendations for and the availability of meningococcal vaccine for all campers attending overnight camps for a period of 7 or more consecutive nights. Meningococcal ACWY (MenACWY) vaccine is recommended at age 11 or 12 years, with a booster dose at age 16 years. Please note that the NYSDOH does not recommend that campers receive either dose of MenACWY vaccine before the recommended ages. Students who are vaccinated before the recommended ages may need to have the doses repeated in order to attend school.”

Recommended Immunizations for Campers

Unless they are in a high risk group, folks should likely stick to the standard ages of the immunization schedule to get their kids vaccinated.

And keep in mind that if your child does get an early dose, it won’t count as part of the routine series and will have to be repeated.

“Doses of quadrivalent meningococcal vaccine (either MPSV4 or MenACWY) given before 10 years of age should not be counted as part of the routine 2-dose series. If a child received a dose of either MPSV4 or MenACWY before age 10 years, they should receive a dose of MenACWY at 11 or 12 years and a booster dose at age 16 years.”

Ask the Experts Meningococcal ACWY

Talk to your pediatrician about an early dose if the extra coverage is important to you though. It will protect your child, but isn’t a general recommendation because younger kids have a lower risk for disease and vaccinating everyone likely wouldn’t impact disease rates that much.

Another situation in which getting an extra dose may be required is if you are traveling to a high risk part of the world. In this case, the extra dose is essential, even if it has to be repeated later.

More on Ages to Give Meningococcal Vaccines

What Are the Recommended and Minimum Ages and Intervals Between Doses of Vaccines?

Most parents likely don’t think about the minimum age or minimum intervals between vaccines, as they just get their kids vaccinated according to the routine immunization schedule.

Things don’t always go according to schedule though…

Recommended and Minimum Ages for Vaccines

After their birth dose of the hepatitis B vaccine, your baby’s next vaccines are usually at two months.

Can you get them earlier?

When necessary, many vaccines can be given earlier and faster than the standard schedule.
When necessary, many vaccines can be given earlier and faster than the standard schedule.

Yes. The minimum age for the first dose of rotavirus, DTaP, IPV, Hib, Prevnar, is 6 weeks.

Some other vaccines can be given earlier than their recommended age too, including:

  • the first MMR vaccine, which can be given as early as age 6 months in certain high risk situations, like traveling out of the country or in an outbreak situation, although this dose will have to be repeated once the child is 12 months old
  • the 4th dose of DTaP, which can be given as early as age 12 to 15 months, as long as at least 4 to 6 months have passed since the third dose
  • the 2nd dose of Varivax, which may be given as early as 1 to 3 months after the first dose
  • the Tdap vaccine, which can be given as early as age 7 years, instead of the more typical 11 to 12 years
  • the HPV vaccine, which can be given as early as age 9 years, instead of the more typical 11 to 12 years

Why would you get a vaccine early?

What if you are going to be traveling just before you infant is going to be 2 months old? Or your 9 year old stepped on a rusty nail, and it had been just over 5 years since his last tetanus (DTaP) shot?

Recommended and Minimum Intervals for Vaccines

In addition to earlier ages, you can sometimes get vaccines more quickly, on an accelerated schedule.

For example:

  • the minimum interval between the 1st and 2nd dose of rotavirus, DTaP, IPV, Hib, Prevnar is 4 weeks, instead of the standard 2 months
  • the minimum interval between the 2nd and 3rd dose of rotavirus, DTaP, IPV, Hib, Prevnar is 4 weeks, instead of the standard 2 months
  • the minimum interval between the 1st and 2nd dose of HPV is either 4 weeks (3 dose schedule) or 5 months (2 dose schedule)
  • the minimum interval between the 2nd and 3rd dose of HPV is 12 weeks
  • the minimum interval between the 1st and 3rd dose of HPV is 5 months, instead of the standard 6 months

Why give these vaccines more quickly than usual?

The usual reason is that a child is a little behind and is working to get caught up.

Absolute Minimum Ages for Vaccines

It is important to remember that in some cases, there are some hard and fast rules about minimum ages. That means that if you get these vaccines any earlier, they won’t count and you will likely have to repeat them, including getting :

  • the 3rd dose of hepatitis B before 6 months (24 weeks) or sooner than 8 weeks after 2nd dose and  16 weeks after 1st dose
  • the first dose of MMR, Varivax or hepatitis A before 12 months
  • the 4th dose of Hib before 12 months
  • the 4th dose of Prevnar before 12 months
  • the 4th dose of DTaP before 12 months
  • the 5th dose of DTaP before 4 years
  • the 4th dose of IPV before 4 years

Sticking to the routine schedule helps to avoid vaccine errors, like giving a vaccine too early. In some situations, the 4 day grace period helps if a vaccine is given a little early.

More on Recommended and Minimum Ages and Intervals Between Doses of Vaccines