Immune System and Vaccination Concepts

The video explains the immune system's response to foreign microbes, detailing the innate and adaptive immune systems. It covers how vaccines work, including live attenuated, killed, subunit, toxoid, mRNA, and vector vaccines, to build immunity without infection. The video also discusses common immune responses to vaccines.

What is the primary role of the innate immune system when a microbe invades the body?

• To produce antibodies immediately

• To activate specialized cells like T and B cells

• To provide an initial defense through inflammation and fever

• To create memory cells for future immunity

How does the adaptive immune system contribute to immunity?

• By using the body's cells to generate antigens

• By weakening the microbe

• By causing inflammation and fever

• By producing antibodies and memory cells

Why are vaccines particularly important for the elderly and those with medical conditions?

• They offer immunity without the risk of severe infection

• They prevent the need for any immune response

• They provide immediate relief from symptoms

• They eliminate the microbe completely from the body

What is a characteristic of live attenuated vaccines?

• They use only the toxins produced by microbes

• They use the body's cells to generate antigens

• They use weakened forms of the microbe

• They use completely killed microbes

How do subunit vaccines work?

• By using the whole microbe

• By using weakened microbes

• By using specific antigens from the microbe

• By using the body's cells to generate antigens

What is the purpose of toxoid vaccines?

• To use weakened forms of the microbe

• To target the microbe directly

• To target the toxins produced by microbes

• To use the body's cells to generate antigens

What is unique about mRNA vaccines?

• They use the whole microbe

• They use weakened microbes

• They use the body's cells to generate antigens

• They use specific antigens from the microbe

Which virus is specifically mentioned as being targeted by mRNA vaccines?

• Polio virus

• SARS-CoV-2 virus

• Measles virus

• Influenza virus

What are common responses of the body to vaccines?

• Immediate immunity without any symptoms

• Severe illness and hospitalization

• Complete eradication of the microbe

• Inflammation, fever, and chills

Why are responses like fever and inflammation expected after vaccination?

• They suggest an allergic reaction

• They show the body is building immunity

• They indicate a failure of the vaccine

• They mean the vaccine is ineffective