| Course | PHLT 8522 Epidemiological Investigations |
|---|---|
| Week | Week 9 |
| Paper type | Control recommendation memo |
| Length | About 810 words, 4 pages |
| Format | Memo, APA 7 citations |
| School | Walden University |
| Program | PhD in Public Health |
| Updated | October 2026 |
Free sample paper for PHLT 8522 Week 9
Memorandum
To: Health Director, City-County Health Department
From: Epidemiology Fellow (PhD in Public Health student)
Date: Month Day, Year
Re: Control recommendations for the riverfront histoplasmosis event, with owners, deadlines and conditions for ending each measure
Summary
The investigation has linked 18 cases of histoplasmosis to spores released during demolition of the Front Street warehouse in September. The Week 8 decision required dust control at the lot before further work. This memo turns that decision and four related measures into assignments. Each measure has an owner, a deadline and a condition that ends it, so that no step lingers without purpose or ends without a reason. Deadlines are illustrative and should be confirmed with each owner.
The Five Measures
Table 1
Control Measures, Owners, Deadlines and End Conditions (Composite)
| Measure | Owner | Deadline | Ends when | |
|---|---|---|---|
| 1. Dust control at the Front Street lot | Property owner and contractor; environmental health inspector verifies | Before foundation work on November 3 | Debris is removed, the lot is graded and seeded or paved, and a final inspection is passed | |
| 2. Inspection of other disturbance sites | Environmental health supervisor | Within 7 days | Every active demolition or earthwork site in the district and along the riverfront is inspected and any site with droppings has precautions in place | |
| 3. Clinician alert | Medical director | Within 2 days | Thirty-four days pass with no new onset after measure 1 is in place | |
| 4. Enhanced surveillance | Surveillance epidemiologist | Begins at once | The same thirty-four-day condition is met, and a final count is reported | |
| 5. Permit condition proposal | Health director with the building department | Next council work session | The council votes on the proposal | |
Note. Thirty-four days is twice the longest incubation period commonly reported for outbreak-related histoplasmosis.
Measure 1: Dust Control at the Lot
The contractor will keep debris and soil wet during any disturbance, cover loads before hauling, stop work during high winds and provide fit-tested respirators to workers who handle debris from the former upper floors. These steps follow NIOSH guidance for work involving accumulations of bird or bat droppings (National Institute for Occupational Safety and Health [NIOSH], 2004). Formalin or similar chemical decontamination will not be required; Benedict and Mody (2016) note it is no longer recommended because it is hazardous and impractical over large areas. The inspector will visit at the start of foundation work and at least weekly until the end condition is met. Because the three occupational cases worked without respirators, the department will also refer the worker exposures to the state occupational safety program, which holds authority over employer practices.
Measure 2: Inspection of Other Sites
Two other demolition or renovation projects and one earthwork site are active within a kilometer of the district. Each will be inspected for bird or bat droppings. Sites with droppings will receive the same precautions as the Front Street lot; sites without them will receive a notice describing the event and the signs that should prompt a call. The inspection is a precaution, not an accusation, since the case-control study found no association with the other candidate sources.
Measure 3: Clinician Alert
A health alert to hospitals, urgent-care groups and primary care practices in the city and neighboring counties will describe the event, ask clinicians to consider histoplasmosis in patients with pneumonia who live, work or spend time near the riverfront, and recommend antigen testing with serology and a convalescent sample. The alert will remind clinicians that a single negative test early in illness does not rule out infection (Azar & Hage, 2017). It will also ask them to report suspected cases within one working day.
Measure 4: Enhanced Surveillance
The surveillance epidemiologist will review Histoplasma test results from the three hospital laboratories and the regional reference laboratory twice weekly, follow up every positive result from a district resident or worker, and update the case count weekly. The end condition matters: if dust control works, onsets linked to new exposures should stop within one incubation period, and two periods without a new case give reasonable assurance that the source is controlled.
Measure 5: A Permit Condition
The event shows a gap. Demolition permits in the city require asbestos and lead surveys but say nothing about accumulated droppings. The health director and the building department will propose to the council that permits for structures with known roosting birds or bats require an assessment and adherence to NIOSH precautions. The measure ends when the council votes, whichever way it decides; the department's role is to present the evidence.
What This Memo Does Not Recommend
It does not recommend closing the riverfront trail or advising residents to stay indoors.
Once dust-generating work at the lot is controlled, the evidence does not suggest a continuing risk to people passing through the district, and such advice would cause alarm without benefit. Reingold (1998) notes that control measures should match the evidence about the source and route; these five do.
References
Azar, M. M., & Hage, C. A. (2017). Laboratory diagnostics for histoplasmosis. Journal of Clinical Microbiology, 55(6), 1612-1620. https://doi.org/10.1128/JCM.02430-16
Benedict, K., & Mody, R. K. (2016). Epidemiology of histoplasmosis outbreaks, United States, 1938-2013. Emerging Infectious Diseases, 22(3), 370-378. https://doi.org/10.3201/eid2203.151117
National Institute for Occupational Safety and Health. (2004). Histoplasmosis: Protecting workers at risk (DHHS [NIOSH] Publication No. 2005-109). https://www.cdc.gov/niosh/docs/2005-109/
Reingold, A. L. (1998). Outbreak investigations: A perspective. Emerging Infectious Diseases, 4(1), 21-27. https://doi.org/10.3201/eid0401.980104
The Walden PHLT 8522 Week 9 instructions
Control recommendation weeks ask students to specify the measures that will stop an outbreak and prevent recurrence. Instructors expect each measure to be concrete, with a responsible party, a timeline and a way to know when it can stop. Prompts often ask students to address the source, the people at risk, clinicians and surveillance, and sometimes policy changes that would prevent similar events. Proportionality is assessed: measures should match the evidence about the source and route. A short memo anchored by a measures table is the norm. Students should cite agency guidance for each technical measure and explain any limits on the department's authority, such as worker safety rules enforced by another agency.
How the PHLT 8522 Week 9 example is put together
A summary paragraph states that every measure has an owner, a deadline and an end condition. Table 1 lists the five measures with those three columns and a note explaining the 34-day period. Five sections follow, one per measure. The dust control section cites federal worker guidance, notes that chemical decontamination is no longer recommended and refers worker exposures to the state program. The inspection section frames inspections as precautions. The clinician alert section cites laboratory diagnostics to explain retesting. The surveillance section explains the end condition. The permit section describes the gap in current demolition permits. A final section states what is not recommended and why.
PHLT 8522 Week 9 rubric: what earns full marks
Control memos are scored on specificity, accountability, proportionality and grounding. The sample earns specificity credit with concrete actions such as wetting, covered hauling and twice-weekly laboratory review. Accountability credit comes from a named owner, a deadline and an end condition for each measure, which graders rarely see done fully. Proportionality is shown by stating what is not recommended and by framing inspections as precautions. Grounding credit comes from agency guidance, a published review and laboratory sources. Recognizing that worker safety belongs to another authority shows understanding of jurisdiction. Format, table and references complete the marks. Memos that list measures with no end condition typically lose the accountability row.
Common PHLT 8522 Week 9 mistakes, and how to avoid them
Weak control memos list good intentions and leave the names blank. Give every measure an owner and a deadline. Decide in advance what evidence will end each measure, and base surveillance end dates on incubation periods. Use agency guidance for technical steps. Check whose authority each step falls under and refer where needed. Include clinicians and surveillance, not only the source. Propose prevention for next time if a gap caused the event. Say what you are not recommending and why. On request, our writers will prepare a first control memo for your outbreak at no charge. Keep the measures few enough that each owner can carry theirs, and confirm the deadlines with those owners before the memo goes out.
Get a PHLT 8522 Week 9 example written to your instructions
List the findings and the agencies in your scenario, and include the Week 9 prompt and rubric. The recommendation gives each control measure an owner, a deadline, a verification step and an end condition, ordered from source to policy. First recommendation free; allow 24-48 hours.
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PHLT 8522 Week 9 questions, answered
Where can I find a free PHLT 8522 Week 9 sample paper?
This page carries a complete Week 9 control recommendation memo, assigning five histoplasmosis measures an owner, a deadline and an end condition, with a table and real sources.
Why does each control measure need an end condition?
So that measures are lifted on evidence rather than lingering, and so that everyone knows what result will show the outbreak is over.
How long should surveillance continue after an outbreak source is controlled?
A common rule is two maximum incubation periods with no new onset after control measures take effect.
Who enforces worker protection at a demolition site?
Usually the state or federal occupational safety program, so a health department refers worker exposures to that authority while acting on community risk itself.
What prevention measure fits a demolition-linked histoplasmosis outbreak?
Adding an assessment for accumulated bird or bat droppings, with required precautions, to demolition permits for buildings with known roosts.