Tag: fever

Were 38% of the Disneyland Measles Cases a Vaccine Strain?

Why do some people think that 38% of the Disneyland measles cases were caused by a vaccine strain of measles?

There were no vaccine strain measles cases in the Disneyland outbreak.
There were no vaccine strain measles cases in the Disneyland outbreak.

Maybe because anti-vaccine folks have been pushing this propaganda for years now…

Were 38% of the Disneyland Measles Cases a Vaccine Strain?

Jim Meehan wasn’t the first to make the claim.

Kenneth Stoller made the claim as part of his factual background and under “penalties of perjury” when he was being investigated for writing fraudulent medical exemptions in California.

There were no vaccine strain measles cases in the Disneyland outbreak.

And it has been repeated over and over again.

There were no vaccine strain measles cases in the Disneyland outbreak.

And not just about California.

There were no vaccine strain measles cases in the Disneyland outbreak.

Larry Palevsky seems to think that the big outbreaks in New York could have just been folks with vaccine-strain measles…

“All measles cases this year have been caused by measles wild-type D8 or B3.”

CDC on Measles Cases in 2019

Of course, none of this is true.

There were no vaccine strain measles cases in the Disneyland outbreak.

There were no vaccine strain measles cases in the Disneyland outbreak!

What the California Department of Public Health reported were recently vaccinated persons who developed a febrile rash, which is a common side effect of the MMR vaccine. They were tested because they were in the middle of a measles outbreak and they wanted to make sure that these folks didn’t have measles. And they didn’t.

A few studies even describe the methods they used.

“Here, we describe a real-time reverse transcription-PCR (RT-PCR) method that detects the vaccine genotype (MeVA RT-quantitative PCR [RT-qPCR]) and that can provide rapid discrimination between wild-type-virus infections and vaccine reactions.”

Roy et al on Rapid Identification of Measles Virus Vaccine Genotype by Real-Time PCR

Again, the “vaccine reaction” is not that they developed measles! They developed a rash and/or fever, a common side effect of the MMR vaccine.

So how do we know that most cases in other outbreaks aren’t recently vaccinated persons with a febrile rash illness?

“During outbreaks, measles vaccine is administered to help control the outbreak, and in these situations, vaccine reactions may be mistakenly classified as measles cases.”

CDC on Genetic Analysis of Measles Viruses

Well for one thing, most of the cases are in folks who aren’t vaccinated!

And measles symptoms are much more severe than the few days of fever and rash that you might get after being vaccinated.

But if necessary, testing can be done to see if it is a vaccine strain and to see if they don’t actually have measles.

And can everyone now stop saying that that 38% of the Disneyland measles cases were caused by a vaccine strain of measles?

There were no vaccine strain measles cases in the Disneyland outbreak.

More on Measles Strains in Outbreaks

Can Your Kids Get a Vaccine While They Are Taking Antibiotics?

In general, simply taking an antibiotic would not usually be a reason to not get vaccinated.

“Contraindications and precautions to vaccination generally dictate circumstances when vaccines will not be given. Many contraindications and precautions are temporary, and the vaccine can be given at a later time.”

General Recommendations on Immunization

The reason your child is taking the antibiotic could make you want to think about delaying the vaccine though.

Can Your Kids Get a Vaccine While They Are Taking Antibiotics?

Kids are prescribed antibiotics for a lot of different reasons, from treating ear infections and acne to pneumonia and meningitis.

Since a mild acute illness with or without fever isn’t considered a contraindication or precaution to getting vaccinated, in most cases, being on an antibiotic would not cause you to want to skip or delay your child’s vaccines.

The vaccine information sheet that you get with each vaccine will list contraindications and precautions on who should not get the vaccine.
The vaccine information sheet that you get with each vaccine will list contraindications and precautions on who should not get the vaccine.

In fact, current antimicrobial therapy is listed by the CDC as one of the conditions commonly misperceived as a contraindication or precaution!

There are some exceptions though, including:

  • taking the antibiotic for a moderate or severe acute illness with or without fever (a general precaution to getting a vaccine)
  • antimalarial agents and antibiotics might interfere with the Ty21a oral typhoid vaccine
  • antiviral drugs (acyclovir, famciclovir, or valacyclovir) might interfere with varicella-containing vaccines (Varivax)
  • antiviral drugs (Tamiflu, Relenza) might interfere with LAIV4 (FluMist, the nasal spray flu vaccine)

Is your child taking the antibiotic for a mild illness or a more moderate or severe illness for which they are now recovering? Then the fact that they are still taking an antibiotic likely isn’t a contraindication or a precaution to getting vaccinated.

More on Vaccine Contraindications