Link to .pdfhttps://ijvtpr.com/index.php/IJVTPR/article/view/47/80The use of dark-field microscopic analysis of fresh peripheral blood on a slide was once widespread in medicine, allowing a first and immediate assessment of the state of health of the corpuscular components of the blood. In the present study we analyzed with a dark-field optical microscope the peripheral blood drop from 1,006 symptomatic subjects after inoculation with an mRNA injection (Pfizer/BioNTech or Moderna), starting from March 2021. There were 948 subjects (94%of the total sample) whose blood showed aggregation of erythrocytes and the presence of particles of various shapes and sizes of unclear origin one month after...