| polio vaccine | 5.86 | The polio vaccine! | ||
| polio virus | 2.50 | Vaccines eliminated the dreaded polio virus. | ||
| polio victim | 1.51 | His mother was a polio victim, confined to a wheelchair. | ||
| polio case | 1.32 | India has more than half the polio cases on Earth. | ||
| polio campaign | 1.05 | He has been enlisted to help in the polio eradication campaign. | ||
| polio vaccination | 0.99 | The two were headed to a village west of Pristina to help organize polio vaccinations. | ||
| polio patient | 0.72 | Care for polio patients was costly. | ||
| polio epidemic | 0.59 | A year later, she helped battle a polio epidemic in New Haven. | ||
| polio eradication | 0.53 | Farrow is a UNICEF spokeswoman on polio eradication. | ||
| polio immunization | 0.53 | In many polio immunizations, volunteers also distribute Vitamin A. | ||
| polio survivor | 0.46 | Decades later, crippling symptoms flare for polio survivors. | ||
| polio outbreak | 0.39 | Polio outbreak in Caribbean blamed on low rate of immunization, | ||
| polio shot | 0.39 | Miss Nancy got real polio shots on the air to soothe fears of the doctor. | ||
| polio infection | 0.33 | Pano did not have an overall estimate of the number of polio infections in Albania. | ||
| polio program | 0.33 | Yet, the polio program has not been without detractors. |