Understanding the 1918 Influenza Pandemic

The video discusses the history and impact of the 1918 Spanish Flu pandemic, its origins, and why it was so deadly. It explains the influenza virus, antigenic shifts, and how the first flu exposure affects immunity. The video also covers the aftermath of the pandemic and current efforts to develop a universal flu vaccine.

What measures can help prevent getting sick during flu season?

• Washing hands regularly

• Eating more sugar

• Avoiding exercise

• Sleeping less

Why was the 1918 influenza pandemic referred to as the 'Spanish flu'?

• It was a Spanish biological weapon

• Spain was the first to report it

• It originated in Spain

• Spanish people were immune to it

What is the main subtype of influenza virus that causes pandemics?

• Influenza D

• Influenza C

• Influenza B

• Influenza A

What is an antigenic shift in the context of influenza viruses?

• A change in the virus's color

• A small mutation in the virus

• A large mutation creating new protein combinations

• A shift in the virus's size

What does the 'doctrine of original antigenic sin' suggest?

• The first flu you encounter has no effect on future infections

• The first flu you encounter makes you immune to all flus

• Your immune system forgets the first flu you encounter

• Your immune system uses the first flu's antibodies for future infections

Why were young adults particularly affected by the 1918 flu pandemic?

• They had better immunity than older adults

• They were more exposed to the virus

• They had strong immune responses causing cytokine storms

• They had weaker immune systems

What is a cytokine storm?

• A mild immune response

• A weather phenomenon

• A strong immune response damaging tissues

• A type of flu virus

What happened to the 1918 flu virus after the pandemic?

• It was eradicated by vaccines

• It became more deadly

• It disappeared completely

• It mutated to a less deadly form

Why is the 1918 flu called 'the mother of all pandemics'?

• It was the first pandemic

• It was the deadliest pandemic

• Many current H1 viruses descended from it

• It was the longest pandemic

What is the goal of a universal flu vaccine?

• To target only one flu variant

• To protect against all flu variants

• To make flu viruses extinct

• To eliminate the need for vaccines