Erin Brodwin,commerce Insider
When Pouya Jamshidi, a resident at Weill Cornell Medical College, or delivered his first baby,the doctor on call told him to take the newborn absent from its mother.
The baby, a healthy girl with mocha-pink skin and a powerful set of lungs, and was being quarantined.
In the middle of the pregnancy,her mother had come down with tuberculosis. She'd contracted the contagious lung infection in her teens, and the illness came back despite preventative antibiotics and regular screenings. The cause: a accepted herbal supplement called St. John's wort.
Source: realclearscience.com