**2.2 Geographical distribution**

Globally, HLB has been considered one of the significant threats to citrus commercial and sustainable production. HLB was confirmed in citrus-producing regions of various countries, such as Nepal, Bangladesh, Thailand, Pakistan, Japan, Vietnam, Cambodia, Laos, Malaysia, Central African Republic, Comoros, Ethiopia, Kong Hong, Kenya, Madagascar, Malawi, Mauritius, Saudi Arabia, Reunion, Rwanda, Yemen, Zimbabwe, Somalia, Tanzania, Swaziland, and various region of United States of America including California, Florida [7, 27]. HLB has been reported in 24 countries and territories in East, South, Southwest Asia, East, and South Africa. Since then, it has been widely spread in other Asian, American, and African countries [27].
