Disease & the Chain of Infection

Influenza, aka Flu, is a virus.  This represents the Chain of Infection at what link?

• Etiologic Agent
• Reservoir
• Susceptible Host
• Mode of Transmission

 When someone coughs, sneezes, or we come in direct contact with contaminated fluids.  In the chain of infection, what link is this?

• Reservoir
• Mode of Transmission
• Portal of Entry
• Portal of Exit

A person who lacks immunity to the cold or flu virus because of age, medication, or general health status.  What chain of infection link are we discussing?

• Susceptible Host
• Etiologic Agent
• Model of Transmission
• None of the Above

Washing your hands after leaving a patients room breaks the chain of infection ___________.

• Method of Transmission
• Portal of Exit
• Portal of Entry
• Etiologic agent

Humans are the host of the common cold & flu.  In the Chain of Infection this represents the link at: 

• Etiologic agent
• Reservoir
• Portal of Exit
• Mode of Trasmission

Simple one-celled organism that multiplies rapidly:

• Virus
• Rickettsiae
• Bacteria
• Fungi

An organism that causes a disease or illness

• all protista
• nonpathogen
• pathogen
• all bacteria

• streptococcus bacteria
• staphylococcus bacteria
• streptobacillus bacteria
• streptospirillum bacteria

MRSA is a type of antibiotic resistant bacteria.  What health practice has caused new antibiotic resistant bacteria like MRSA?

• people eating more protein that causes bacteria to grow stronger
• people spending more time in the hospital so picking up bad bacteria
• using ultraviolet rays to kill bacteria...it mutates some of them
• too many antibiotics prescribed or people don't finish all their antibiotics prescriptions

What could we take to kill bacteria?

• antibodies
• antibiotics
• antigens
• pathogens