Hi @waqarahmadshah The comparison you make of vaccines and a control practice is good, it is an easy way to visualize it. Vaccines are a clear example of what genetic engineering can do for the good of humanity. Not only do they avoid expenses in the face of a disease, but they also prevent diseases that literally incapacitate for life from expressing themselves. Many of them have been eradicated thanks to vaccines. Thanks for the mention and for sharing this good post.