If a hospital ordered a bunch of these............people might have been suspicious.......so the medical researchers made covid from scratch and tested it on the animals in that area..

• Model Organism:

  Laboratory rats (Rattus norvegicus) are widely used as model organisms in research due to their ease of breeding, short generation times, and the availability of diverse inbred strains. 
• Contributions to Research:

  They have significantly contributed to understanding various diseases including cardiovascular diseases, metabolic disorders, and cancer. Rats are also used in studies of neural regeneration, wound healing, diabetes, and transplantation