For many years, scientists have been trying to create a vaccine for HIV, the virus that leads to AIDS. Unfortunately, after twenty years of research, they are no closer to finding an effective vaccine than they were when they started. HIV is a unique virus that actually attacks a person’s T cells so they are then unable to mount a counterattack. Given that current vaccine methods use a person’s immune system to attack the invading organism, it appears that an HIV vaccine will need a novel method to work.
- What is an example of a vaccine that has mixed risks and benefits?
- What kinds of people worked on the Underground Railroad during the 1800s?
- How many immigrant women worked in cotton mills during the 1800s?
- What organizations were there for women who worked in offices in the early 1900s?
- What Are Crater Rays and Which Crater On the Moon Has the Best Example Of a Ray System?