Why would vaccination be more likely to eradicate a viral disease than a bacterial disease? Why can polio be eradicated but not influenza? Give reference.

Compare Influenza A, Influenza B, SARS-Cov2, and a common cold virus. Include:   Structure (Envelope? Spikes? Genome? Entry and exit mechanism?)   What is the specific antigen on the virus that the immune system recognizes?   How does it spread?   What are the symptoms?   What causes the seasonality?   How to prevent infection?

Name any five vaccine of corona virus which has been accepted for emergency use around the world

Which of the following statements are correct for a class V ssRNA (-) virus? it uses its genome directly for translation it must make the complementary (+) RNA strand to synthesize more of its genome it replicates its genome via classical semiconservative replication it converts its genome to DNA via reverse transcriptase as part of its life cycle

At a recent trip to the drug store, your pharmacist informs you that the flu vaccines are in. You fear the risk of getting the flu because you've had it before and it wasn't a pleasant experience. You proceed to get the vaccinated for the flu. Which of the following statements regarding your recent vaccination is true? O The vaccine you received protects you from every strain of the flu. O The vaccine you received protects you from the strain of bacteria which scientists believe will be common in the upcoming "flu season". O The vaccine you received protects you from the virus which scientists believe will be common in the upcoming "flu season". O The vaccine won't be effective because you've had the flu in the past and are immune to it.

Discuss the role of each of these factors in the causation of the COVID 19 pandemic: zoonotic virus origins immunologically naive population SARS-CoV-2 virulence factors affecting transmissibility evolution of immune resistant virus variants.