Quiz
#1. What causes COVID-19?
#2. Which disease has been eradicated by vaccine?
#3. Which animal carries the Ebola virus?
#4. What type of pathogen is Ebola?
#5. Which of these body mechanisms help prevent infection?
#6. Which of these diseases are not commiunicable?
#7. What is the typical salinity (salt content) of sea water?
#8. Which virus is the most infectious?
