41.   Last month, the American Academy of Pediatrics said its members can continue using their remaining supplies of the oral vaccine if given as third and fourth doses.

42.   Men and women with infants in their arms lined up at many immunization centers much before the medical staff arrived to administer the oral vaccine.

43.   Men and women with infants in their arms lined up at many immunization centers before the medical staffs arrived to administer the oral vaccine.

44.   Millions of parents took their children to schools, hospitals and community theaters across India for the oral vaccine, domestic news agencies reported.

45.   Millions of parents queued with their toddlers and infants at the centers in schools, hospitals and community theaters for the two-drop oral vaccine.

46.   Researchers found the cases had originated from the polio virus that, used in oral vaccine and usually given on sugar cubes, had mutated.

47.   Researchers later found that the cases had originated from the polio virus that, used in oral vaccine and usually given on sugar cubes, had mutated.

48.   That primed the children for an outbreak of from the oral vaccine.

49.   The American Academy of Pediatrics said last month its members can continue using their remaining supplies of the oral vaccine if given as the third and fourth doses.

50.   The cases have been traced to the same oral vaccine that experts have used to eliminate the disease in many countries.