Pfizer carried out tests on both humans and animals in its Phase 1 trials and followed standard protocol.
One post states that Pfizer did not carry out tests on animals before rolling out the vaccine and accuses the drug company of treating humans as "lab rats". As EuroNews and the Associated Press note, this is false. Due to the urgency of the vaccination program, Pfizer carried out tests for their phase 1 trials on animals and humans simultaneously. Many social media users claimed that the animal phase of the testing was skipped entirely.
On its website, Pfizer also confirmed that it tested on non-human primates and mice in its pre-clinical trials for the vaccine in September 2020.
Speaking to the Associated Press, the University of Pennsylvania's Dr. Drew Weismann told AP: “Clinical trials for 75,000 people show it’s safe and it’s 95 percent effective. That’s pretty good data to convince people that it is OK.”
On a video on Pfizer's website, Stephen C Malamud, a principal investigator at the Icahn school of medicine, explains that the purpose of a phase 1 trial is to "find the proper way to administer that medication. The safety and tolerability of that medication is the key role of that trial." Pfizer then carried out its three further phases of the vaccine, all of which produced positive results.
There is no evidence that Pfizer skipped any key steps while trialing the vaccine.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19, including symptoms, prevention, and available treatment, please refer to the World Health Organization or your national healthcare authority.