Germs in Our World
Hygiene Habits
Immune System Superheros
Good vs. Bad Germs
Fun Facts about Germs
100

These are tiny organisms that are all around us, but we can’t see them without a microscope.

What are germs?

100

This is how long you should wash your hands with soap to remove germs.

What is 20 seconds?
100

These cells in your body are part of the immune system and fight harmful germs.

What are white blood cells?

100

These tiny germs are good for your digestion and live in your stomach.

What are good bacteria or probiotics?

100

This common household item helps to kill germs by breaking down their cell walls.

What is soap?

200

This is a place in your home where germs can multiply quickly, especially when food is prepared.

What is the kitchen?

200

When you sneeze or cough, you should use this part of your body to prevent germs from spreading.

What is your elbow?

200

This is the part of your body where your immune system is active and defends you from illness.

What is your blood?

200

These germs can make you sick by infecting parts of your body like your lungs or throat.

What are harmful bacteria or viruses?

200

This is how germs travel from one person to another through droplets in the air.

What is coughing or sneezing?
300

Germs can spread when people touch this common object and then touch their face.

What is a doorknob?

300

You should wash your hands before eating and after doing this.

What is using the bathroom?

300

This is a type of protection your immune system gets after fighting a germ and remembering it.

What is immunity?

300

These helpful germs live in your body and help fight harmful germs.

What are good bacteria?

300

Your body’s immune system fights germs using special proteins called these, which latch onto and destroy harmful germs.

What are antibodies?

400

These germs are so small that they can only be seen under a microscope and can make you sick.

What are bacteria or viruses?

400

This is what you should use only when soap and water aren’t available to clean your hands.

What is hand sanitizer?

400

Vaccines help your immune system prepare for these, so your body can fight them faster.

What are viruses or bacteria?

400

These germs cause diseases like the flu, but vaccines can protect you from some of them.

What are viruses?

400

This part of your body helps fight germs by sending signals to other parts of your immune system.

What are your white blood cells or lymph nodes?

500

Germs are always around us, but we can keep them from causing illness by doing this often.

What is washing our hands?

500

You should clean this often because it’s touched by everyone and can spread germs.

What is a table or desk?

500

This is an important organ that helps filter out germs and protect your body.

What are the lymph nodes?

500

These germs can be killed with antibiotics if an infection becomes severe. 

What are bacteria?

500

These germs are not alive and need a living host to reproduce, which is why they are called "obligate intracellular parasites."

What are viruses?