In January 2015 a US medical practitioner of many years experience was prevented from touring Australia and speaking publicly about the medical literature on vaccines. Dr. Sherri Tenpenny, was due to speak in venues in Sydney, Melbourne, Brisbane and Adelaide at pre-booked venues that had been publicised months in advance. Yet on 27 January 2015 she cancelled her tour citing concern for her safety and those attending. Most venues had cancelled her talks because pro-vaccine lobby groups (many of whom are promoting industry interests) threatened their livelihood. Pro-vaccine lobby groups are claiming that a debate of the medical literature on vaccines “is a danger to public health”.