Experiment: leeches choke on the blood of vaccinated people

1) First case: The experiment shows how leeches drink the blood 
f a drug addict, alcoholic and smoker.
https://youtu.be/6gKF977lxsI
2) Second case: The blood of a covid unvaccinated patient who
has been ill is easily drunk by a leech.
https://youtu.be/6gKF977lxsI
A leech cannot drink the blood of a vaccinated patient.
https://youtu.be/3DqoEjEo-SQ