Pandemic Viruses

The video discusses the rapid spread and deadly impact of viruses like flu, smallpox, SARS, and HIV. It explains how viruses invade human cells, replicate, and spread infection. Factors such as urbanization, environmental mismanagement, and global travel increase infection risks. The threat of bioterrorism is also highlighted, but the successful eradication of smallpox offers hope that medical advances can protect against future outbreaks.

How do viruses replicate within the human body?

• By dividing like bacteria

• By using their own DNA to multiply

• By consuming nutrients from the bloodstream

• By injecting themselves into human cells and using human DNA

Which of the following is NOT a factor that increases the risk of global infection?

• Rapid urbanization

• Environmental mismanagement

• Local trade

• Intensive farming practices

What role does modern travel play in the spread of infections?

• It helps contain infections within local areas

• It has no impact on infection spread

• It reduces the risk of infection spread

• It increases the likelihood of international spread

What is a potential use of viruses that raises concern?

• As a method for pest control

• As a tool for genetic engineering

• As a form of biological warfare

• As a natural remedy

What gives hope for protection against future viral outbreaks?

• The development of new farming techniques

• The successful eradication of diseases like smallpox

• The increase in global travel

• The use of viruses in bioterrorism