Question 1 Dr. Noymer talked about some of public health’s successes, as well as failures, regarding infectious diseases. Which of the following is false? The main Samoan island successfully quarantined from the 1918 flu pandemic, whereas Western Samoa did not. The Western Samoa population experienced devastating infection rates and death as a result. Historically, we saw a single type of dominating influenza A strain in circulation at a time. However, since 1977, we now have co-circulation of two influenza strains simultaneously. Having two strains in circulation at one time makes it much easier to develop successful flu vaccines because there are more viral components for the vaccine to target. The word "quarantine" originates from the Italian word quarantena, meaning "forty days." This is due to the 40-day isolation of people on ships practiced as a measure of disease prevention related to the plague. Vaccines are the biggest success story in public health, starting with the eradication of smallpox.  Question 2 Which link in the chain of infection is the intervention described below meant to break? "Quarantine is used to keep someone who might have been exposed to COVID-19 away from others. Quarantine helps prevent spread of disease that can occur before a person knows they are sick or if they are infected with the virus without feeling symptoms. You have been in close contact with someone who has or is suspected to have COVID-19 so it is important for you to stay home, separate yourself from others, and monitor your health." http://publichealth.lacounty.gov/ acd/docs/COVHomeQuarantine.pdf Means of transmission Susceptible host Portal of entry Infectious agent  Question 3 Of the following, which four must be reported to the local health department if diagnosed? Choose all that apply. ALS/Lou Gehrig's disease Alzheimer's Measles Rabies Hepatitis C Malaria Strep throat Candidiasis