Hypothetically speaking
Could someone or a government develop a disease and have it target and effect only certain individuals?
for example could everyone who gets a dose of say a vaccine be immune to a disease?
Like if I invented a disease and wanted to use it on India to kill 95% of the population, how much would I have to fear of that disease spreading? and would it be possible that the disease only effects individuals of certain races? also could the disease only effect those who have not gotten certain vaccines?
I am just wondering. I am sure everyone has watched movies in which governments made viruses to kill off large quantities of people, I just wonder how easily it could be done and at that how do you make sure it does not get out of hand?
By making a disease don't you run the risk of your vaccine not working? and don't you run the risk of the disease getting stronger?