Microorganism
What is a Microorganism?
A living organism too small to be seen with the naked eye, requiring a microscope for observation.
What is a Reservoir?
The habitat where germs live and multiply, acting as the source before they exit to spread to a new host through a way in.
What is the portal of exit
The portal of exit is the pathway a pathogen uses to leave its reservoir to spread infection, like through coughing, sneezing, blood, urine, feces, or draining wounds.
What is the mode of transmittion?
The Mode of Transmission is the crucial link in the Chain of Infection showing how germs travel from an exit to a new host's entry.
What is the portal of entry?
The Portal of Entry is the pathway an infectious microbe uses to get into a new host, like through your nose, mouth, eyes , broken skin, or via tubes , completing the Chain of Infection
Where does it live?
Is any person, animal, plant, soil, or substance where an infectious agent normally lives, multiplies, and can be transmitted.
What is the portal of exit in the chain of infection?
It's the way the microorganism escapes the infected host reservoir.
How do germs spread?
Droplets from a sneeze
What is a Susceptible host
A Susceptible Host is the final link in the chain of infection, representing a person vulnerable to getting sick due to a weakened immune system, age, or other health factors
True or false- Are they big?
False they are very tiny
What's the difference between a reservoir and a host?
The reservoir is where the germ lives and grows; the host is the new person it infects.
Give examples of portals of exit from a human reservoir.
Respiratory secretions (coughing, sneezing), blood, bodily fluids, urine, feces, and draining wounds.
What's an indirect mode?
Touching a contaminated doorknob
How does the flu enter?
Through the nose/mouth when you breathe in droplets.
False they do.
How do we break the chain at the reservoir link?
By eliminating the source: disinfecting surfaces, cleaning equipment, sanitizing food water, controlling pests, isolating infected individuals, or improving hygiene.
If someone has the flu, what's their portal of exit?
Respiratory droplets from coughing or sneezing.
What is direct transmission?
Immediate transfer via touching, kissing, or droplets from a cough/sneeze within close range.
How does bacteria enter via a medical device?
Through the insertion site of a catheter into the skin.
True or false- They are a single-celled organism that has a nucleus and feeds on other microorganisms
True
Which link comes after the reservoir?
The Portal of Exit, followed by the Mode of Transmission.
What about someone with food poisoning (like Salmonella)?
Feces and vomit are major portals of exit for gastrointestinal infections.
What is indirect transmission?
Transfer via an intermediary.
How does a urinary tract infection (UTI) start with a catheter?
Bacteria enter through the skin opening where the catheter is inserted, going into the bladder.