Eradication of Polio

The video discusses the history of polio, a highly contagious virus affecting children worldwide, and the development of vaccines to combat it. Initial vaccine attempts were problematic, but Jonas Salk's dead virus vaccine in the 1950s marked a breakthrough. Despite a major setback with Cutter Laboratories' live virus incident, improvements in manufacturing ensured safety. Albert Sabin later developed an oral vaccine using a weakened virus. Together, these vaccines have nearly eradicated polio globally, showcasing a significant medical success story.

What was the main challenge faced by early polio vaccine developers?

• Insufficient scientific knowledge

• Disastrous initial trials

• Lack of funding

• Public opposition

What was the critical error made by Qatar Laboratories with Salk's vaccine?

• They failed to test the vaccine properly

• They included live, unweakened virus

• They distributed the vaccine too widely

• They used an incorrect dosage

How did the incident with Salk's vaccine affect public perception?

• It had no significant impact

• It caused widespread panic

• It led to a temporary halt in vaccinations

• It increased trust in vaccines

What was the key difference in Sabin's polio vaccine compared to Salk's?

• It was administered via injection

• It required fewer doses

• It used a live but weakened virus

• It was cheaper to produce

What was the outcome of using both Salk's and Sabin's vaccines?

• New strains of polio emerged

• Vaccination rates declined

• Polio was eradicated worldwide

• Polio cases increased