Zainab Ompu Jainah; Baharudin; Djunisar Syahpri; Erwin M Ikhsan; Novita Lina HS. Optimization of Performance As A Community Service Regarding The Implementation of The Covid-19 Vaccine Based on Article 25 Paragraph 3 Letter C Government Regulation Number 17 Of 2018 Concerning Districts . ICOMLOS 2022, 1.