Mona Randolph is one of three people in the U.S. who still uses an iron lung.
Researchers found that a genetically engineered poliovirus could treat the most common form of brain cancer.
Ongoing economic turmoil has led to a shortage of vaccines for the deadly virus.
An unexplained shortage of the injectable version of the vaccine slows attempts to kill polio in Afghanistan, Nigeria and Pakistan.
Vaccination rates have fallen dramatically in the last few years, and the conflict is making things worse.
"There is no mercy, we have decided to deal with the refusal cases with iron hands.”
With four more health workers killed this week, trying to eradicate the virus is a dangerous job
More than a dozen polio cases have already been recorded in the largely rebel-held province of Deir al-Zor.