“…Only one addressed syndromic surveillance for influenza [ 54 ]. Eight studies (20%) [ 15 , 16 , 27 , 29 – 31 , 52 , 54 ] investigated private practitioners reporting behaviors towards voluntary case reporting. Thirteen (32.5%) [ 17 , 24 , 28 , 34 , 37 , 38 , 40 , 41 , 44 , 50 , 53 , 55 , 56 ] investigated systems that expected mandatory case reporting from the private sector.…”