Here's an example of what's due today

Line list

Tue, Apr 13, 2027 · Week 13 · Biotechnology for Health (Biomedical Innovations)

Today's goal: Build an outbreak line list and calculate incidence and prevalence from case data.

Learn first

What a finished product looks like

This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.

Outbreak line list with incidence and prevalence
Completes: Completes the Problem 5 line-list step: a case-by-case line list with key fields plus calculated incidence and prevalence and a trend observation.

Line list (one row per case), gastrointestinal outbreak:

  • Case 1: onset day 1, symptoms vomiting/diarrhea, outcome recovered
  • Case 2: onset day 1, symptoms diarrhea, outcome recovered
  • Case 3: onset day 2, symptoms vomiting, outcome still sick
  • Case 4: onset day 3, symptoms diarrhea/fever, outcome still sick
  • Case 5: onset day 4, symptoms vomiting, outcome still sick

Incidence (new cases) by day: day 1 = 2, day 2 = 1, day 3 = 1, day 4 = 1.

Prevalence on day 4 (all still sick on day 4): 3 cases (cases 3, 4, 5).

Trend observation: New cases appeared every day through day 4, so the outbreak was still ongoing and had not yet peaked.

Case IDOnset daySymptomsOutcome
11Vomiting/diarrheaRecovered
21DiarrheaRecovered
32VomitingStill sick
43Diarrhea/feverStill sick
54VomitingStill sick
Outbreak line list table with five cases by onset day, symptoms, and outcome.

Also due today: Submit your line list and calculations in the course LMS today.

Check yourself

WebXam problem for today's skill

One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.

WebXam-style domain: Microbiology Testing and TechnologySelf-check skill: Calculating prevalence from a line list
A line list shows 5 total cases. On day 4, cases 1 and 2 have recovered and cases 3, 4, and 5 are still sick. What is the prevalence (active cases) on day 4?

Tap an answer to see the full explanation. Nothing is recorded or graded.