Purnomo Yusgiantoro Center (PYC), on 17 April 2018, together with Paguyuban Istri, Pensiunan dan Warakawuri Kementerian Energi dan Sumberdaya Mineral (PIPW KESDM), held a one-day diphtheria vaccination program. The idea behind the program was to respond to the recent diphtheria outbreak in Indonesia, in which the spreading can be reduced by a proper vaccination to build immunity. The vaccination was held in PYC’s office and opened by Mrs. Widyasari Pudja as the Chair of PIPW KESDM, and as well as Mrs. Filda Yusgiantoro as the Chairperson of PYC. Afterward, dr. Hera Bambang gave a brief explanation about the importance of diphtheria vaccination. She explained that diphtheria vaccination should be given periodically and, this is important for both adults and children. The vaccination was done in cooperation with Rumah Sakit Pusat Pertamina (RSPP) with more than 60 people vaccinated. With the provided vaccination, PYC and PIPW KESDM hoped to contribute building the herd immunity and to prevent the spread of diphtheria disease.