| Course | HS315 Practices in Public Health |
|---|---|
| Unit | Unit 4 |
| Paper type | Prevention level comparison |
| Length | About 700 words, 5 pages double-spaced |
| Format | APA 7 student paper |
| School | Purdue University Global |
| Program | BS in Health Science |
| Updated | October 2026 |
Free sample paper for HS315 Unit 4
Secondary for the Wound, Primary for the Bloodstream: A Unit 4 Prevention Level Comparison for Invasive Group A Strep in Drayton County
[Student Name]
Purdue University Global
HS315: Practices in Public Health
Unit 4 Prevention Level Comparison
[Instructor Name]
[Date]
The county and its case split are composite; the prevention levels, the treatment guideline and the impact pyramid cited are real.
Prevention Levels Are Relative
The three levels of prevention go back to Leavell and Clark (1965): primary prevention stops a disease before it starts, secondary prevention finds and treats it early, and tertiary prevention limits the damage once it is established. The levels are defined relative to a particular condition. An action that is secondary prevention for one condition can be primary prevention for another that would follow from it. Invasive group A strep shows this clearly, because most invasive infections in the county began as a skin wound.
The Two Columns
Column one, the skin wound and its local infection:
Primary: clean injection supplies and education on safer injection sites; dry socks, showers and laundry for people living outside; foot care for people who walk all day.
Secondary: noticing a red, warm or swollen wound early and treating it; draining an abscess; oral antibiotics where a clinician judges them needed (Stevens et al., 2014).
Tertiary: managing a chronic leg ulcer so it does not keep reopening.
Column two, invasive group A strep:
Primary: everything in column one's secondary row, since a wound treated early never becomes a bloodstream infection; also shelter hygiene and cluster response to limit spread between residents.
Secondary: recognizing sepsis early and starting treatment in the emergency department.
Tertiary: surgery for necrotizing infection, rehabilitation after amputation, and follow-up care.
The same nurse dressing the same wound is doing secondary prevention for the infection in front of her and primary prevention for the infection that could kill the patient next week.
Where the County's Cases Fell
Units 1 and 2 split the [13] cases among people experiencing homelessness or injecting drugs by the chance each one missed. Seven had a wound no one looked at. Four had early treatment but nowhere to keep the wound clean. Two caught the infection at a shelter. Placed against the columns, the seven untreated wounds are failures of secondary prevention for the skin infection. The four that came back are failures of primary prevention for wounds, since the conditions that caused them did not change. The two shelter cases are failures of primary prevention for invasive disease through hygiene and cluster response.
Which Approach Is the County Short Of?
The county's existing services sit mostly in column two's secondary and tertiary rows. The hospital recognizes sepsis and operates on necrotizing infection well. The syringe services van provides some column one primary prevention through supplies. What is nearly absent is column one's secondary row: no one in the county offers wound checks or dressing outside a clinic, and the clinic hours do not match the hours people are free.
That gap is where the largest share of the county's cases began. It is also where the cost per case prevented is likely to be lowest, since a dressing and a nurse's time cost far less than an intensive care admission. The health impact pyramid (Frieden, 2010) suggests that changes to living conditions, such as showers and laundry, reach more people than individual clinical care. Both are needed here. Conditions explain why wounds form and return, and early care explains whether a wound becomes an emergency.
Limits of the Comparison
The split of cases rests on chart review of small numbers, and some cases could fit two groups. The comparison also says nothing about people who inject drugs but are housed, who were [3] of the [13]. And treating wounds early does not address the reasons people are living outside, which is a housing problem beyond the scope of a prevention plan.
Conclusion
Drayton County is strong at the end of the chain and weak near its start. Early wound care is secondary prevention for the skin and primary prevention for the blood, and it is the level the county is missing.
References
Frieden, T. R. (2010). A framework for public health action: The health impact pyramid. American Journal of Public Health, 100(4), 590-595. https://doi.org/10.2105/AJPH.2009.185652
Leavell, H. R., & Clark, E. G. (1965). Preventive medicine for the doctor in his community: An epidemiologic approach (3rd ed.). McGraw-Hill.
Stevens, D. L., Bisno, A. L., Chambers, H. F., Dellinger, E. P., Goldstein, E. J. C., Gorbach, S. L., Hirschmann, J. V., Kaplan, S. L., Montoya, J. G., & Wade, J. C. (2014). Practice guidelines for the diagnosis and management of skin and soft tissue infections: 2014 update by the Infectious Diseases Society of America. Clinical Infectious Diseases, 59(2), e10-e52. https://doi.org/10.1093/cid/ciu296
Reading the HS 315 Unit 4 instructions
The fourth unit typically asks you to compare prevention approaches for one health problem, classifying measures as primary, secondary or tertiary and arguing which level a community most needs. Papers often run three to four pages, sometimes with a table. Instructors look for correct classification with a reason, awareness that levels are defined relative to a specific condition, and a recommendation grounded in local data rather than general preference. Many sections ask you to cite the original source of the prevention levels and at least one current guideline for the condition. If your text includes primordial prevention, decide whether it applies and say so. Close with the limits of your comparison, since small numbers and overlapping categories are common.
How this HS315 Unit 4 example is built
The comparison begins by explaining that prevention levels are relative to a condition, citing Leavell and Clark. Two lists follow, one per column, with measures for the skin wound and for invasive disease under each level, drawing on national skin infection guidance. The highlighted sentence shows one nurse doing two levels of prevention at once. A section maps the county's case split onto the rows: unexamined wounds as missed secondary prevention for the skin, reopened wounds as missed primary prevention, and shelter cases as missed primary prevention for invasive disease. The paper then identifies which row the county lacks, weighs cost and reach with the health impact pyramid, names its limits and ends on the level the county is missing.
Where the points sit in the HS315 Unit 4 rubric
Prevention level comparisons are commonly scored on correct classification, depth of comparison, use of local evidence, quality of the recommendation and sources. Classification accuracy and the recommendation tend to carry the largest share of points. A measure placed at the wrong level, or a level defined without reference to a condition, costs credit quickly. Depth is rewarded when the paper explains why a measure belongs where it does. Local evidence earns points when the community's own cases or data decide the recommendation. The recommendation should name one level and defend it, including cost or reach. Sources should include the origin of the framework and a current guideline. A short limits section often lifts an otherwise solid paper.
HS315 Unit 4 help from the desk
A frequent problem is a three-row table with no explanation of why each measure sits where it does. Another is treating levels as fixed labels, so that the same action cannot be secondary for one condition and primary for another. Some students recommend more education by default, without data showing that lack of knowledge is the gap. Others ignore the community's existing services and recommend something already in place. Leaving out limits suggests the comparison is more certain than it is. If your section assigns a different problem, perhaps falls in older adults or childhood obesity, tell us the problem, and the two columns can be drafted with you and find the level your community lacks.
Get an HS315 Unit 4 example written to your instructions
Name the disease or injury your HS315 Unit 4 comparison covers, and say whether the prompt includes primordial prevention. With the instructions and rubric in hand, the desk sends a free first custom sample in 24-48h: the prevention levels placed on a table, then weighed against each other for the population your section names. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.
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HS315 Unit 4 questions, answered
Should the comparison include primordial prevention?
Include it when the prompt or textbook lists four levels. Primordial measures act on conditions that let risk arise in the first place, such as unstable housing or drug markets that raise infection risk, and they are hard to attribute to a single disease. The example mentions them in one sentence and keeps its table to three levels, because many HS315 prompts ask only for those.
Where can I find a free HS315 Unit 4 sample paper?
The full Unit 4 prevention level comparison is here, classifying measures for skin wounds and invasive group A strep in a composite county.
Can one action belong to two prevention levels?
Yes, when you look at two conditions. Treating a skin wound early is secondary prevention for the wound and primary prevention for the invasive infection it could become.
Where do showers and laundry fit among the levels?
For skin wounds they are primary prevention, since clean, dry skin and clothing reduce the chance that a wound forms or becomes infected in the first place.
What is the source of the three levels of prevention?
They are usually traced to Leavell and Clark's preventive medicine text from the 1950s and 1960s, which described prevention at each stage of a disease's natural history.