OC15.01: What does "halo" sign mean in fetal CMV infection?. Issue Volume 58:Issue S1(2021)Supplement (14th October 2021) - Hawkins‐Villarreal, A.M.; Castillo, K.P.; Eixarch, E.; Nadal, A.; Alarcón‐Allen, A.; Planas, S.; Figueras, F.; Goncé, A.