Vaccines 1. How do they work?

What part of the immune system is like a "missile" used to combat the "invader" viruses?

What is the role of memory cells?

Which of the following choices best describes the relationship between memory cells and vaccines?

True or False: "Live" vaccines are made of viruses that have been weakened enough that the immune system can easily beat them, but the viruses are still strong enough that your body will make memory cells to remember it.

Some viruses, like the _______, mutate (change) very fast. This is why one vaccine will only protect you for a short period of time.

If 10,000,000 children caught the measles VIRUS, about how many would die?

If 10,000,000 children received the measles VACCINE, about how many would suffer from somewhat serious side effects?

What's more dangerous: the measles VIRUS or the measles VACCINE?

True or False: Vaccines cause or contribute to autism

For herd immunity to protect an unvaccinated person, how many of the people around them must be vaccinated?

Explain in your own words. Is a vaccine more like a force field for your body or a coach for your immune system? Choose one and explain why. A vaccine is like a .... because....

Place these steps in order of vaccine production.

1. Designed and tested in a laboratory.
2. Phase 1 trial with a few people (20-100 adult volunteers) to test for serious side-effects.
3. Phase 3 trials on many people (10,000 or more) to test whether it works to prevent Covid.
4. The public can take the vaccine! If enough people take it, we can reach herd immunity
5. Phase 2 trial with more people (1,000 or more) to figure out the dose and make sure it's safe for everyone.
6. Mass produce vaccines in factories.
7. 
   
8. Federal Drug Administration approves the vaccine as safe.

Opinion: Your friend has the opportunity to take the coronavirus vaccine tomorrow, but isn't sure if they want to. What would you tell them to do and why?