As a nurse I understand your collage, I would only add:
The BCG vaccine (Bacillus Calmette-Guérin), used in the prevention of tuberculosis, was developed by two researchers, Albert Calmette and Camille Guérin in 1921.
Its discovery made it possible to eradicate the terrible tuberculosis.
Today 2021, studies are underway to determine if the BCG vaccine has an impact on the reduction of Covid-19 mortality.
In countries that have a policy of vaccinating all newborns, it has been observed that the mortality rate of Covid 19 is lower.
I liked your collage and the mix of art and health.