Bacteria; causes fever, sore throat, fatigue, etc.

Virus; causes runny nose, headaches, coughing, etc.

Fungus; causes skin rashes, itching, etc.

Parasite; causes stomach cramps, diarrhea, etc.

Physical contact with a person who is sick

Indirect contact through shared objects

Contact with contaminated surfaces

Contact with healthy individuals

Bacterial infection; causes fever and rash

Fungal infection; causes skin peeling

Virus; causes itchy bumps on skin

Allergic reaction; causes hives

One-celled organisms that have a more complex structure than bacteria

Multicellular organisms that are primarily autotrophic

Single-celled organisms that lack a nucleus

Organisms that can only survive in extreme environments

Diseases that are spread by germs

Diseases that are caused by poor nutrition

Diseases that are inherited from parents

Diseases that are caused by environmental factors

Diseases spread through contaminated foods

Infections caused by bacteria in the air

Allergies triggered by food additives

Nutritional deficiencies due to poor diet

A condition that occurs when pathogens enter the body, multiply, and damage body cells

A process where the body produces antibodies to fight off diseases

A state of being free from illness or injury

A type of treatment for bacterial diseases

Bacteria; causes itchy rash on feet

Fungi; causes itchy rash on feet

Virus; causes itchy rash on feet

Parasite; causes itchy rash on feet

Bacteria; causes destruction of the lung tissue

Virus; causes inflammation of the throat

Fungus; leads to respiratory failure

Parasite; affects the digestive system

Caused by bacteria, most commonly spread through undercooked chicken or eggs

A viral infection commonly found in fish

A type of food poisoning caused by mold

A bacterial infection spread through contaminated water

Organisms that can be seen with the naked eye

Substances that prevent disease

Disease causing organisms that are so small they can be seen only through a microscope

Organisms that help in digestion

Bacteria; causes fever and chills

Virus; causes fever, vomiting, chills, fatigue, headache, muscle aches, and respiratory symptoms

Fungus; causes skin rashes and itching

Parasite; causes digestive issues and weight loss

Contact with an object that has a person’s germs on it

Direct interaction with a person

Transmission through the air

Contact with a surface that is not contaminated

Virus; characterized by swelling of the lymph nodes in the neck and throat

Bacteria; causes a sore throat and fever

Fungal infection; leads to skin rashes

Parasitic infection; affects the digestive system

Bacterial infection causing fever and chills

Viral infection leading to respiratory issues

Protozoa; severe flu-like symptoms, sometimes fatal, spread by mosquitos

Fungal infection affecting the skin and nails

Bacterial infection; causes inflammation of the liver

Virus; causes inflammation of the liver and yellowing of the skin and whites of eyes

Fungal infection; leads to liver failure

Parasitic infection; affects the digestive system

Primitive Life-forms, such as molds or yeasts, that cannot make their own food

Complex organisms that can photosynthesize

Multicellular animals that feed on plants

Single-celled bacteria that reproduce asexually

Caused by bacteria, most commonly spread by food handlers not washing hands

Caused by a virus, often transmitted through contaminated water

Caused by parasites, typically spread through undercooked meat

Caused by fungi, usually contracted from contaminated surfaces

The smallest and simplest disease causing organism

A type of bacteria that causes infections

A complex multicellular organism

A type of fungus that decomposes organic matter