The epidemiological triad can be used to frame strategies for the prevention of farm machinery injuries. Which action should the nurse take to focus on the agent?

A. Wear a N95 respirator mask during direct contact with others:
SARS is a viral respiratory illness that spreads via respiratory droplets, and an N95 respirator mask is specifically designed to filter out airborne particles, including those that could carry the SARS virus. Wearing an N95 respirator is critical for preventing the transmission of SARS to others, especially in healthcare settings or close contact situations.

B. Cover mouth and turn head when coughing:
Covering the mouth and turning the head helps reduce the spread of droplets, but it is not sufficient to prevent transmission of airborne viruses like SARS. For effective prevention, especially in a healthcare setting, more stringent measures like using N95 respirators are required.

C. Use meticulous hand washing technique:
Hand washing is crucial for preventing the spread of many infections, but it does not directly address the airborne transmission of viruses like SARS. While it complements other infection control measures, it is not the primary method for preventing SARS transmission.

D. Discard all tissues used during coughing in a biohazard bag:
Proper disposal of tissues is important for infection control, but it alone does not prevent the airborne spread of SARS. This measure is part of broader infection control practices but is less effective in preventing transmission compared to the use of N95 respirators.

A) Small bruises on the lower extremities:
While bruises should be noted and monitored, small bruises on the lower extremities are relatively common in toddlers due to their active nature and frequent minor falls. They do not immediately indicate abuse unless accompanied by other signs.

B) A one-inch laceration across the center of the forehead:
A laceration, especially if it's recent, should be assessed for proper care and treatment. However, a laceration alone does not necessarily indicate abuse and is less urgent compared to signs of possible abuse such as burns.

C) Refusal to answer simple questions:
A toddler’s reluctance to answer questions might be due to shyness or anxiety related to the visit or the situation. This behavior alone does not indicate an immediate need for intervention unless accompanied by other signs of distress or harm.

D) Several dime-sized circular burns on the back:
Circular burns are a significant concern as they are characteristic of burn injuries that may result from abuse, such as being burned by a hot object or liquid. This finding warrants immediate intervention and further investigation to ensure the child’s safety and well-being.