Purnomo Yusgiantoro Center (PYC) is involved in several social initiatives. On April, 17th 2018, together with Paguyuban Istri, Pensiunan dan Warakawuri Kementerian Energi dan Sumberdaya Mineral (PIPW KESDM), PYC held a one-day diphtheria vaccination program. The idea behind the program was a response to the recent diphtheria outbreak in Indonesia, in which spreading can be reduced by giving the proper vaccination to build a population immunity. The vaccination was held in PYC’s office and was opened by Mrs. Widyasari Pudja as the chair of PIPW KESDM as well as Mrs. Filda Yusgiantoro as the chair 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 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 hope to contribute building the population immunity and to prevent the spread of diphtheria disease.