Pluerisy Why Have I Had Pluerisy Six Times?

Why have i had pluerisy six times? - pluerisy

Pluerisy I had about six times and was dismissed from my previous job because of the amount of time free of disease. Some questions:
First, the fact that he may have caused by dust from hard wood (mahogany), powdered plaster and bronze powder? Secondly, it was against the law to me because dismissed this problem? And finally, why do I keep it?