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    				| 1. | Expand the following abbreviations: (1) PPIP, (2) OPV (3) NIDS | 
| Answer» (1) PPIP`=` Pulse polio immunisation programe, (2) OIPV `=` Oral polio vaccine, (3) NIDS `=` National immunisation days e.g., 4 NIDs for PPIP. | |