Microscopic
This is the scientific name for any agent that cause disease
What is a pathogen?
These two physical barriers are considered your body's first line of defense
What are skin and mucous membranes?
These medicines are used to kill or slow the growth of bacteria
What are antibiotics?
This is the primary way diseases like the flu and colds are spread from person to person
What is through the air (sneezing/coughing)?
This is the number of school days missed each year in the U.S. due to the flu
What is 38 million?
These tiny disease-causing particles consist of genetic material and a protein coat
What is a virus?
This response is characterized by pain, redness, and swelling at the site of an injury
What is inflammation?
This condition occurs when bacteria can no longer be killed by a specific antibiotic
What is antibiotic resistance?
This bacterial disease is often contracted from stepping on a rock or cut in the soil
What is tetanus?
This is the total amount the U.S. spends each year to treat infectious diseases
What is $120 billion?
These organisms get nutrients by absorbing them from living or dead organisms
What are fungi?
These proteins are produced by white blood cells to bind to and tag specific pathogens for destruction
What are antibodies?
This substance is prepared from killed or weakened pathogens to produce immunity
What is a vaccine?
This is the most widespread and serious protozoan infection worldwide, often spread by mosquitoes
What is malaria?
These are the two primary government organizations watching for new diseases in the U.S.
What are the CDC and NIH?
These single-celled organisms are larger and more complex than bacteria
What are protozoans?
This "escalator" uses hairlike structures to move trapped bacteria to the back of the throat to be swallowed
What is cilia?
These specialized white blood cells are created by the immune system to remember a pathogen for future attack
What are memory cells?
This is the one of the most common parasitic infections in the U.S., often causing head itchiness
What is head lice?
This disease is the only one declared entirely eradicated in nature
What is smallpox?
This bacterial infection of the digestive system is usually spread by eating contaminated food
What is Salmanellosis?
Thee nodes swell when you are sick because of a growing number of white blood cells fighting infection
What are lymph nodes?
These extra doses of a vaccine are sometimes needed to help maintain the production of memory cells
This "kissing disease" is viral and spread through contact with saliva or mucus
What is mononucleosis?
This modern factor has made it significantly easier for diseases to spread from country to country overnight
What is international air travel?