Question

activity

methicillin-resistant staphylococcus aureus (mrsa) is an infectious disease that often appears in news headlines. research this disease and complete the following:

1. define the three words in mrsa: methicillin, resistant, and staphylococcus aureus.
2. describe the signs and symptoms of a mrsa infection of the skin.
3. complete the links in the chain of transmission for mrsa.
4. explain at least three ways that links in the chain of transmission may be broken to stop the spread of the infection.

Explanation:

Define methicillin, resistant, and Staphylococcus aureus

• Methicillin: A strong penicillin-type antibiotic used to treat bacterial infections.
• Resistant: The ability of bacteria to survive and grow despite exposure to antibiotics designed to kill them.
• Staphylococcus aureus: A common species of bacteria found on human skin and in the nose that can cause infections.

Describe skin symptoms of MRSA

• Red, swollen, painful bumps that resemble pimples or spider bites.
• Warm to the touch and filled with pus or other drainage.
• Often accompanied by a fever.

Complete the six links in the chain of transmission

1. Infectious Agent: Staphylococcus aureus (MRSA) bacteria.
2. Reservoir: Human skin, nose, or contaminated surfaces.
3. Portal of Exit: Open wounds, cuts, or respiratory droplets.
4. Mode of Transmission: Direct skin-to-skin contact or touching contaminated objects.
5. Portal of Entry: Broken skin, cuts, scrapes, or surgical sites.
6. Susceptible Host: Anyone, especially individuals with weakened immune systems or open wounds.

Explain three ways to break the chain of transmission

• Hand Hygiene: Wash hands frequently with soap and water or use alcohol-based hand sanitizer to break the mode of transmission.
• Wound Care: Keep cuts, scrapes, and wounds clean and covered with dry, sterile bandages to block portals of exit and entry.
• Sanitization: Clean and disinfect shared items and surfaces (like gym equipment or countertops) regularly to eliminate the reservoir.

Answer:

Question 1

• Methicillin: A type of penicillin antibiotic used to treat bacterial infections.
• Resistant: The ability of bacteria to withstand the effects of an antibiotic.
• Staphylococcus aureus: A common bacterium that lives on the skin and nose, which can cause infections.

Question 2

• Red, swollen, and painful bumps (often resembling pimples or spider bites).
• Warmth around the infected area.
• Pus or fluid drainage from the bump.
• Fever.

Question 3

1. Infectious Agent: Staphylococcus aureus (MRSA bacteria).
2. Reservoir: Human skin, nasal passages, or contaminated objects.
3. Portal of Exit: Drainage from wounds, skin flakes, or respiratory droplets.
4. Mode of Transmission: Direct skin-to-skin contact or indirect contact with contaminated surfaces.
5. Portal of Entry: Cuts, scrapes, surgical wounds, or mucous membranes.
6. Susceptible Host: Individuals with open wounds, weakened immune systems, or those in close-contact environments.

Question 4

• Wash hands regularly: Breaks the Mode of Transmission by removing bacteria from hands.
• Keep wounds covered: Breaks the Portal of Exit and Portal of Entry by preventing bacteria from escaping or entering the body.
• Avoid sharing personal items: Breaks the Mode of Transmission by preventing the spread of bacteria via towels, razors, or clothing.