41.   From remote villages to crowded urban railway stations, millions of children received polio vaccines Saturday in a massive effort to eradicate the crippling disease.

42.   Half the volunteers will receive the vaccine while the other half will be given a placebo.

43.   Immune Response argued that in small studies, patients receiving the vaccine saw a slightly slower progression of the disease and a slightly slower decrease in vital immune cells.

44.   In small studies, patients receiving the vaccine saw a slightly slower progression of the disease and a slightly slower decrease in vital immune cells.

45.   None of the primates that received the vaccine showed signs of illness during the six-month study.

46.   None of the three patients had received the vaccine, and Epstein said doctors believe they caught the mutated strain from someone else.

47.   None of the three patients had received the vaccine.

48.   None of the workers who died had received the vaccine.

49.   Residents in the New Caney district can still receive vaccine at local clinics Monday, officials said.

50.   The gifts helped the children who received vaccines to calm their fears of strangers, she said.