Effectiveness of pertussis vaccines–myth vs. reality

Note: an updated version of this article can be found here.

Over the past few months I have written extensively about the the current whooping cough (Bordetella pertussis) outbreak which has reached epidemic levels in areas like the Washington state, and has been considered one of the worst outbreaks in the USA during the past several decades. The outbreak has lead to several deaths here in the USA and in other countries such as the UK. Of course, this outbreak has lead to the blame game from the antivaccination crowd, because they claim that since A) most kids are vaccinated, and B) we’re having this outbreak then C) either the vaccines are useless or are actually the cause of the outbreak. Seriously. They blame the vaccines.

So I decided to search the internet (or just read the comments section of my blog) to find the most popular vaccine denialist arguments regarding pertussis vaccinations, and deconstruct and debunk them. Hopefully, it will be a useful tool for you when you’re engaging a ridiculous argument with one of those antivaccinationists. Of course, I could use the information too. Continue reading “Effectiveness of pertussis vaccines–myth vs. reality”

Make vaccine exemptions more difficult to obtain

A study recently published in the Journal of Infectious Diseases, Medical Exemptions to School Immunization Requirements in the United States–Association of State Policies With Medical Exemption Rates (2004-2011), found that more parents get medical vaccination exemptions for their kindergarten children in states in which they are easier to obtain. A perfectly predictable result, based on anecdotal observations of the arguments that I’ve observed on the internet.

The study found that the number of medical exemptions was relatively low during the seven years of the study period, but the rate was more than 6X higher in states with relatively easy medical exemption criteria when compared to states with more difficult exemption standards. As I reported previously, as more parents get vaccine exemptions, herd immunity can be impacted, and children in schools with low immunization levels can face outbreaks of diseases that were once thought rare. Continue reading “Make vaccine exemptions more difficult to obtain”