जुन 5 , 1981 निफ्राय मारखिबेरामबिगियान नायगिदिंनायनि थाखाय गोबां बुंफुरलुफोर जौगाहोबाय जेरै बांगुइ बुंफुरलु आरो 1994 आव फेहेरजानाय मुलुग सावस्रि फसंथान एइडस केस बुंफुरलु ।
Since June 5 1981 many definitions have been developed for epidemiological surveillance such as the Bangui definition and the 1994 expanded World Health Organization AIDS case definition .