Re: US county bars unvaccinated children from public spaces amid measles emergency
I note Joel Harrison's comments about me . I would point out my previous reply  which was not about how I read Offit's article but how it was used to persuade people about the safety of administering multiple vaccines by Offit himself others, and with detailed documentation. When it is acknowledged, at least in some cases, that a single vaccine can carry a serious risk (smallpox, anthrax, yellow fever immediately come to mind) I am not sure that the calculation was ever anything more than a red-herring, but it was manifestly used by professionals when addressing the public to reassure them about the safety of multiple vaccine exposure - indeed Harrison still seems to think that it is reassuring - and I am simply pointing this out.
 Joel A Harrison, 'Re: US county bars unvaccinated children from public spaces amid measles emergency', 10 May 2019, https://www.bmj.com/content/364/bmj.l1481/rr-23
 John Stone, 'Reply to Joel Harrison - Offit's calculation was misleading', 8 May 2019, https://www.bmj.com/content/364/bmj.l1481/rr-11
Competing interests: No competing interests