'Impact x Nightline' explores medical tourism in Matamoros, Mexico, where health officials say a deadly outbreak of fungal meningitis was linked to two plastic surgery clinics. WATCH NIGHTLINE EPISODES: abc.go.com/shows/nightline ALSO AVAILABLE ON HULU: hulu.tv/2wSmSrZ #nightline #plasticsurgerymexico #meningitis #surgeryrecovery #impact #health #abcnews