Understanding Viruses and Zoonotic Infections

What is the approximate size of a typical virus?

• 100 billionths of a meter

• 1 millionth of a meter

• 1 thousandth of a meter

• 1 meter

What is a zoonotic infection?

• A virus that is transmitted through water

• A virus that jumps from animals to humans

• A virus that only affects bacteria

• A virus that only affects plants

What percentage of human infectious diseases are estimated to be zoonotic?

• 10-20%

• 30-40%

• 60-70%

• 80-90%

What is a reservoir host?

• A host that stores a virus without getting sick

• A host that can only be found in the ocean

• A host that always gets sick from a virus

• A host that is immune to all viruses

How do viruses adapt to infect new hosts?

• By growing larger

• By mutating rapidly

• By developing new proteins

• By changing their color

What is the role of contact in virus spillover?

• It facilitates the transfer of viruses between species

• It makes viruses less dangerous

• It allows viruses to mutate

• It prevents viruses from spreading

How does air travel contribute to the spread of viruses?

• By reducing the number of hosts

• By connecting distant regions and spreading germs

• By making viruses less contagious

• By isolating infected individuals

What is the main message regarding human interaction with the natural world?

• Humans can control all viruses

• Humans are part of the natural world and share diseases with animals

• Humans should avoid all contact with animals

• Humans are separate from nature

What is the significance of understanding zoonotic infections?

• To prevent future pandemics

• To increase animal populations

• To eliminate all viruses

• To develop new vaccines

What did Darwin's theory remind us about humans?

• Humans are superior to animals

• Humans are separate from animals

• Humans are immune to animal diseases

• Humans are animals and share diseases with them