Understanding Infectious Diseases and Transmission

The video explains how people are exposed to harmful organisms daily and how the immune system defends against them. It covers infectious diseases caused by pathogens like bacteria and viruses, and discusses various transmission methods, including direct and indirect contact, contaminated water and food, and animal vectors like mosquitoes. The video highlights the global impact of diseases such as malaria and dysentery.

What is the primary function of the immune system?

• To regulate body temperature

• To fight infectious diseases

• To produce energy for the body

• To aid in digestion

Which of the following is NOT considered a pathogen?

• Vitamins

• Fungi

• Viruses

• Bacteria

How can rhinoviruses be transmitted?

• Through direct contact only

• By insect bites

• Through the air or contaminated objects

• Only by consuming contaminated food

What is a common cause of dysentery in some parts of the world?

• Direct contact with infected individuals

• Contaminated water supplies

• Insect bites

• Airborne transmission

Which insect is responsible for spreading malaria?

• Ants

• Flies

• Mosquitoes

• Bees