What is the primary purpose of viral tests for COVID-19?

To determine if a person had a past infection.

To detect antibodies in the patient's blood.

To identify the genetic material of the virus.

To check for the presence of viral components in a current infection.

What is the main function of antibodies in the immune system?

To recognize and neutralize antigens

To stimulate the production of viruses

When are antibodies typically detectable in the blood after a COVID-19 infection?

1 to 2 days after the onset of symptoms

1 to 2 weeks after the onset of symptoms

What is the primary goal of vaccines?

To directly treat infectious diseases

To stimulate the immune system to recognize and defend against pathogens

To replace the need for antibiotics

How do traditional vaccines typically introduce antigens to stimulate an immune response?

They use synthetic mRNA to encode viral proteins.

They deliver inactivated or subunit forms of the pathogen.

They insert live, fully functional pathogens into the body.

They rely on antibiotics to stimulate immunity.

How do mRNA vaccines like Pfizer-BioNTech and Moderna work to stimulate an immune response?

They introduce live, fully functional viruses into the body.

They deliver inactivated viral proteins.

They use synthetic mRNA to instruct cells to produce viral proteins.

They rely on antibiotics to stimulate immunity.

What is the key advantage of mRNA vaccines, such as the COVID-19 mRNA vaccines?

They directly introduce live viruses into the body.

They require the cultivation of infectious agents.

They are rapid to develop due to synthetic production.

They alter the recipient's DNA.

What is the role of memory cells in the immune system after vaccination?

To 'remember' antigens for future defense

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