Epidemic and Pandemic

What is one of the ways that antibiotics work?

• They can stop bacteria from reproducing

• They can stop viruses from reproducing

• They stop toxins from poisoning the tissues of hosts

What sort of pathogen causes influenza (flu)?

• A bacterium
• A virus
• A fungus
• A protist

A city has an outbreak of a disease that affects an unusually large portion of its population at the same time (locally). Which term BEST describes the outbreak?

• pandemic

• plague

• epidemic

In 1918, an outbreak of influenza infected 500,000 people all over the world. Tens of millions of those infected died. In 1994, an outbreak of pneumonic plague spread quickly through the city of Surat in India, killing 52 people.

Which statement BEST describes the two events?

• Both outbreaks were pandemics.

• Both outbreaks were epidemics.

• The influenza outbreak was a pandemic. The plague outbreak was an epidemic.

Which vector could lead to a malaria epidemic?

• fly
• bat
• mosquito

If a monkey is a vector for an infectious disease, which bestdescribes how it transmits into the human population and becomes an epidemic?

• The monkey inhales contaminated drops from the air.
• The monkey bites a human.
• The monkey shares food.

Which most accurately describes what makes a mosquito a vector?

• A mosquito can be sick with malaria but not spread the disease.
• A mosquito can spread malaria but not be sick with the disease.
• A mosquito can carry malaria but not spread the disease.

After World War I, an outbreak of the Spanish Flu killed 50 million to 100 million people around the world. Which best describes this occurrence?

• Epidemic, because it happened within a relatively short time span.

• Epidemic, because it affected many individuals in multiple countries.

• Pandemic, because it affected many individuals in multiple countries.

Epidemic measles outbreaks were once common, but their occurrence has greatly diminished. Which BEST explains this?

• Children receive immunity to the measles virus from their mothers

• The measles virus has largely been removed from the environment

• The measles vaccine has greatly reduced the number of viral infections

Which situation would MOST favor the spread of an infectious disease?

• overcrowding

• use of vaccines

• good sanitary conditions