Iceberg Phenomenon

Iceberg Phenomenon


Icebarg of disease

  • Disease in a community may be compared with an iceberg.
  • The floating tip of the iceberg represents what the physian sees in the community, i.e. clinical cases (Diagnosed case, symptomatic case or clinically apparent case).
  • It includes sub-clinical cases & carriers
  • The vast submerged portion of the iceberg represents the hidden mass of disease, i.e. latent, inapparent, presymptomatic and undiagnosed cases and carriers in the community.
  • The “waterline” represents the demarcation between apparent and inapparent disease.
  • Epidemiologist is concerned with Hidden portion of iceberg whereas clinician is concerned with tip of iceberg.
  • Screening is done for Hidden portion of iceberg whereas diagnosis is done for tip of iceberg.
  • Iceberg phenomenon of disease is not shown by rabies, tetanus and measles.
  • The clinician concerned only with the tip of iceberg, i.e symptomatic cases that are seen in clinical treatment, this can result in inaccurate view of the nature and causes of a disease results because the minority of the cases are studied (hidden cases :-. submerged portion of ice berg is not studied) → Clinician’s Fallacy.

In some disease, a great deal of subclinical infection occurs –

  • Rubella
  • Polio
  • Japanese encephalitis
  • Influenza
  • Mumps
  • Hepatitis A and B
  • Diphtheria
Exam Question
 
  • Infectious disease showing iceberg phenomenon are Rubella, Influenza, Polio, Japanese encephalitis,  Mumps , Hepatitis A and B &  Diphtheria
  • An infectious disease shows iceberg phenomenon. That means it has More subclinical case
  • Demarcation line in iceberg disease is between Apparent and inapparent cases
  • According to the concept of iceberge phenomenon of disease It includes sub-clinical cases, carriers & It constitutes undiagnosed reservoir of infection
  • Iceberg phenomenon differentiates Apparent and inapparent
Don’t Forget to Solve all the previous Year Question asked on Iceberg Phenomenon

Leave a Reply

Free Mini Course on Stomach

Mini Course – Stomach

22 High Yield Topics in Stomach

in Just 2 Hours

Submission received, thank you!

Close Window
%d bloggers like this:
Malcare WordPress Security