Test your knowledge with these top questions!
What function did iron lungs serve for polio patients during epidemics?
Iron lungs were negative-pressure respirators that breathed for polio patients whose chest muscles were paralyzed, sustaining them for weeks or months.
What delivery method did Jonas Salk's 1955 polio vaccine use?
Jonas Salk's 1955 polio vaccine used killed inactivated poliovirus given by injection and required a needle and medical personnel to administer.
What was the original primary mission of the March of Dimes in the 1930s-1950s?
President Franklin D. Roosevelt founded the March of Dimes in 1938 to fund polio research, patient care, and the development of an effective vaccine.
Which vaccine was given to American schoolchildren on sugar cubes in the 1960s?
Albert Sabin's oral polio vaccine used live weakened virus on sugar cubes and was distributed nationally in the early 1960s for easy oral dosing of children.
Which study design follows a group forward in time?
Cohort studies watch exposed and unexposed groups to compare outcomes.
Which bias occurs when sick people are more likely to enroll?
Selection bias skews results when participants differ from the general population.
Which sanitation breakthrough most reduced cholera in cities?
Sewers separate drinking water from waste and block oral-fecal transmission.
Which drinking-water step destroys most bacteria and viruses?
Chlorine disinfection destroys bacteria and viruses in drinking water.
Why do neighborhood health outcomes often differ by zip code?
Income, education, housing, and environment shape health more than genetics alone.
Which policy tool expands equity in healthcare access?
Medicaid expansion extends coverage to more low-income adults.