Despite being accused and convicted of previous poisonings, how did michael swango continue to work in the healthcare industry? who eventually put an end to swango's crimes?

Michael Swango continue to work in the healthcare industry because there was lack of checking system.

Explanation:

Even after killing many patients, Michael Swango still kept on working in the health care industry because of the lack of proper checking system in the hospital and more over the administrators of the hospitals were not ready to accept the fact that one of the people working in the hospital could kill his patients.

And therefore Swango was allowed to work even after he was imprisoned. The attempt to put an end to the crimes committed by Swango was done by the judge Jacob Mishler who gave the punishment to Swango about three consecutive life terms.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.