Guest Lecture inviting Prof. Dr. Jaap Middeldorp as a guest lecturer was held at the Postgraduate School Universitas Airlangga on July 2, 2018. The guest lecture with the theme “EBV, a human tumor virus with many faces” was attended by Immunology students at the UNAIR Postgraduate School. In addition, he also attended thesis sessions and acted as a supervisor/examiner. During his 5-day visit in Surabaya, he also discussed with professors all study programs at the UNAIR Postgraduate School and Immunology lecturers. Before leaving on July 5, he also took time to visit Mount Bromo.