Rohingya refugees in Bangladesh refer to the Rohingya refugees from Myanmar living in Bangladesh. As of December 2017, an estimated 655,000 to 700,000 Rohingya people have fled to Bangladesh since 25 August 2017, to avoid ethnic and religious persecution by Myanmar's security forces (see Northern Rakhine State clashes). There are more 300,000 Rohingyas living in Bangladesh who fled in earlier waves violence from the Burmese government over the last three decades. Moreover, Rohingyas in Hydarabad feel insecure in India, they also try to enter into Bangladesh as the Rohingyas in Myanmars do. Due to the large population of Rohingya inhabiting such a small area, disease spreads easily. As of 12 November, Diphtheria killed nine Rohingya and infected about 700 others.