Screening can be used for case detection, disease control, research, and education. Case detection involves prescriptive screening to identify unrecognized disease for an individual's benefit, such as screening for anemia, breast cancer, cervical cancer, or hemolytic disease in newborns. Disease control involves prospective screening examined for the benefit of others to control infectious disease spread, like tuberculosis screening of immigrants. Research screening is performed to study chronic diseases and determine prevalence and incidence. Educational screening creates public awareness and trains health professionals.

1. Uses of
Screening
P.Prudhvi
Roll: 95
Guided by Dr.Sipra mam

2. Uses of Screening
 Case detection
 Control of disease
 Research purposes
 Educational opportunities

3. CASE DETECTION
 This is usually prescriptive.
 Presumptive identification of unrecognised
disease.
 Does not arise from patients request.
 People are screened primarily for their own
benefit.

4. Contd.
The responsibility for treatment is upon public health
personnel.
Eg:
1.Iron deficiency anemia,
2.breast cancer,
3.cervical cancer,
4.hemolytic disease of the newborn.
Among all cancers, screening for colorectal cancer
saves most number of lives.

5. Colorectal cancer screening

6. Hemolytic disease screening

7. CONTROL OF DISEASE
 Prospective screening.
 People are examined for benefit of others.
 This is for controlling the spread of disease. Usually
government officials request for such screening.
Eg: Screening of immigrants for infectious
diseases like tuberculosis.

8. Tuberculosis screening
 Tuberculosis screening is done routinely in almost
all developed countries.
 This is usually done by Montaux skin test.
 Diameter of erythema and induration more than
10mm indicates the test is positive.
 However, in countries like India it doesn’t have
much value because of BCG vaccination at birth.

9. Mantoux testing

10. RESEARCH PURPOSES
 Screening may sometimes be performed for
research purposes.
 Mainly done for chronic diseases whose natural
history is not fully known.
 Prevalence and incidence of the disease can be
inferred from the research.
 Investigator should inform the participants that no
follow up therapy will be available.

11. EDUCATIONAL OPPORTUNITIES
 Sometimes screening provide opportunities
for creating public awareness and for
educating health professionals.