The nurse was treated for her cough in July. But the cough persisted and she was given a CT scan which showed a possible TB patch in her lung the size of a 50-cent coin.

TOP INSIGHT
About one third of the world's population is infected with tuberculosis (TB). In 2014, an estimated 9.6 million new cases of TB were diagnosed.
But the hospital is not taking any chances and is recalling patients who had been in Ward 47 since July, Goh said.
The first patients were at NUH for screening last week and more will be screened over the coming weeks.
The nurse, who is on medical leave for two weeks, will resume work as being on treatment means she is not contagious. Her colleagues in the ward have all been tested and found negative.
So far this year, 1,252 new TB cases have been diagnosed in Singapore.
MEDINDIA




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