Diplomatic Immunity

Whooping cough vaccine works well despite its imperfections

Helen Petousis Harris Nov 07, 2019

Pertussis (whooping cough) is a conundrum. It is a disease that was described hundreds of years ago and the bacteria that causes it (Bordetella pertussis) isolated in 1906. We have had vaccines for about 80 years but this disease is defiant in the face of human immunity. I wanted to address some misconceptions about pertussis vaccines. Seven key points in … Read More

Why are vaccinated people getting measles?

Helen Petousis Harris Sep 04, 2019

Here is a very quick and over simplified explanation about why some of the cases of measles are fully vaccinated (epidemiologists look away!). The vaccine is not 100% protective. One dose is around 92% and two doses around 98%. Generally, things look like this pie chart, assuming the vaccine is potent and the patients relatively healthy. Most cases occur in … Read More

18

Why is there a rip-roaring measles outbreak in NZ?

Helen Petousis Harris Aug 21, 2019

As with many countries around the world, NZ is experiencing the worst measles outbreak in over 20 years. Welcome back to the dark ages. This was predictable,  entirely preventable, and the government were warned. If this outbreak is not stamped out by March next year NZ will lose its hard-earned measles elimination status. There are four reasons for this – … Read More

14

Authentic resistance or authentic distortion?

Helen Petousis Harris Aug 05, 2019

Authentic resistance appears to be a two woman army advocating that the body’s natural immune system is all that is required to keep healthy. They assert that parents must make an informed decision about vaccines based on information from the medical literature. On the latter point we agree. The Resistance is holding seminars around the country on “Informed consent and … Read More

19

How safe is the MMR vaccine?

Helen Petousis Harris Jul 13, 2018

In the tiny Pacific Nation of Samoa, on Friday 6 July 2018, two babies died shortly after receiving MMR vaccine. How could this happen? Lots of discussion is going around about this tragedy, and even more questions. Here are some responses to the things I have been asked this week summarised under the headings below. About MMR vaccines How … Read More

31