2020 Facebook funded Vaccine Messaging study.

6 months prior to a covid-19 vaccine being available Yale university along with Facebook and UNICEF conducted a study of 4000 participants. In which they conducted targeted messaging against vaccine hesitancy. Long story short they wanted to know the best way to convince you to take the vaccine before it was ever even created.

On the reference site provided. They never cited a result to the study. But with a little searching you can see that 6 months after this study was complete yale released a PDF guide to vaccine messaging..... Keep in mind this was done partnering with facebook. But if we look closely at the vaccine messaging pdfs provided from Yale and UNICEF they are different. UNICEF has scrubbed Facebook from its guide completely.

I find this all to strange.

References:
Vaccine messaging study:
https://clinicaltrials.gov/ct2/show/NCT04460703

Yale PDF
https://medicine.yale.edu/yigh/resources/Covid-19_Guide_v3_416091_40906_v1.pdf

UNICEF PDF
https://www.unicef.org/documents/vaccine-messaging-guide