11.   The first vaccines may not work for a high percentage of the population.

12.   This week, AIDS vaccine researcher Dr. James Kahn is enrolling people for a clinical trial of the first oral vaccine against HIV to undergo human testing.

13.   Patarroyo said that the technology he has developed to produce the first manmade vaccine opened the door to better malaria vaccines and to finding vaccines against other diseases.

14.   Another was a Colombian, Manuel Elkin Patarroyo, developer of the first synthetic vaccine against malaria.

15.   An AIDS vaccine first developed by the late Dr. Jonas Salk has been approved for testing in Thailand by the government, local newspapers reported Saturday.

16.   But because lots of healthy adults want flu shots too, the CDC is urging health groups to ensure that high-risk patients get the first available vaccine.

17.   Researchers have made the first vaccine that protects against genital herpes.

18.   The drug is not the first possible vaccine to go into human trials.

19.   The first vaccine against Lyme disease passed a major hurdle as government advisers reluctantly backed its sale, despite a list of safety concerns.

20.   THE first experimental human vaccine has been developed to protect people against the deadly Hong Kong bird flu, it was revealed on Monday.