[Labor Advisory No. 09-23] Guidelines on the Administration of Measles-Rubella and Oral Polio Vaccine Supplemental Immunization Activity (MR-OPV SIA) Posted on April 12, 2023December 27, 2025 by rizzlemay [Download PDF] [Labor Advisory No. 09-23] Guidelines on the Administration of Measles-Rubella and Oral Polio Vaccine Supplemental Immunization Activity (MR-OPV SIA) ShareTweetShare0 Shares