The evolutionary perspective of eradication of smallpox by the vaccine; whereas, scientists still need to produce a new influenza vaccine every year. Introduction: Influenza and smallpox both the diseases are caused by a different virus. Smallpox is a contagious and deadly disease that has affected the human population for thousands of years. Influenza is commonly known as ‘flu.’ It is also highly contagious respiratory illness. The symptoms of flu can be mild to severe.

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Chapter 12, Problem 6WIO

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The evolutionary perspective of eradication of smallpox by the vaccine; whereas, scientists still need to produce a new influenza vaccine every year.

Introduction:

Influenza and smallpox both the diseases are caused by a different virus. Smallpox is a contagious and deadly disease that has affected the human population for thousands of years. Influenza is commonly known as ‘flu.’ It is also highly contagious respiratory illness. The symptoms of flu can be mild to severe.

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Why do scientists worry more about new strains of viruses like influenza and coronviruses as potential causes of deadly human pandemics, but they never talk about the next big Herpesvirus strain deadly pandemic? Which of the statements below helps partially answer that? Influenza and CoV are RNA viruses which results in having higher mutation rates -- they can more easily jump between host species. Herpesviruses are dsDNA viruses and usually very host specific. Only humans get Herpesviruses, while animals can get Influenza viruses and Coronaviruses. dsDNA viruses aren't very transmissible and even when they are, they're not deadly. We already have effective vaccines for Herpes. Influenza and CoV have more genes, more complex gene expression, and can undergo genetic recombination or reassortment, while Herpesviruses are more limited.

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