1.   Although Jenner had used cowpox virus, a third virus, vaccinia, became the standard vaccine against smallpox.

2.   Mbidde expressed the empirical view that many standard vaccines had been developed before scientists knew how they worked.

3.   Standard vaccines are made from killed virus.

4.   The experimental vaccine in the chimp experiments differs from most standard viral vaccines, which are derived from either dead or weakened viruses.

5.   The successful eradication of smallpox documents the effectiveness of the standard vaccine.

6.   But Epstein said the standard vaccine appears to still work against the mutated strain, and that health officials are organizing vaccination efforts in Haiti and the Dominican Republic.

7.   But it said the standard vaccine appears to still work against the mutated strain, and its experts are helping organize vaccination efforts in Haiti and the Dominican Republic.

8.   Epstein said the standard vaccine still works against the mutated strain, and that health officials are organizing vaccination efforts in Haiti and the Dominican Republic.

9.   In the new work, ferrets were given either a standard vaccine or a DNA vaccine based on several virus variants.

10.   The injections protected nearly all the animals, a better result than standard vaccine approaches have achieved against Ebola in animal studies.