A miasm can be induced by having a disease, by vaccination etc.

Here is the famous Subrata Banerjea's definition. I have had the pleasure of attending uite a few of his lectures and at least 2 on miasms! Now take a deep breath before reading this!

"I define Miiasm as an invisible inimical dynamic principle (infecting agent/inimical principle or dynamis) which permeates into the system (dynamic plane) of a living creature and creates a groove or stigma in the constitution, which can only be eradicated by a suitable anti miasmatic treatment. If not, it will persist throughout the life of the person and will be transmitted to the next generation.""

He goes on to say 1)miasm =infecting disease
2)Miasmic disease = disease reaction following infection with a miasm 3) Chronic miasm = infecting agent capable of producing chronic disease reactio in an organism

There are also Acute miasms a) cholera, typhoid, pneumonia diptheria etc b) Fixed miasms e.g. miasms of whooping cpugh , smallpox c) half spiritual miasms e.g. measles, scarlet fever etc. Then the Chronic miasms a) endemic fevers b) psora. c) syphilis d) sycosis e) drug miasms f accessory miasm of cow pox vaccine)