Table 1 Summary of the number of search terms identified and used in this study for each disease.

From: Disease surveillance based on Internet-based linear models: an Australian case study of previously unmodeled infection diseases

Disease

Terms identified

Unique search terms

Relevant terms

Previously identified

Final list

Terms with data

Pneumococcal disease (invasive)

777

304

54

35

69

34

Varicella zoster (Chickenpox)

115

115

9

8

15

13

Varicella zoster (Shingles)

953

710

6

8

14

11

Influenza (laboratory confirmed)

1799

701

16

14

20

8

Varicella zoster (unspecified)

637

532

2

8

9

7

Gonococcal infection

909

663

2

6

8

6

Ross River virus infection

1316

931

19

6

19

6

Barmah Forest virus infection

420

271

11

2

12

6

Dengue virus infection

803

505

8

6

11

5

Hepatitis B (unspecified)

24

24

0

5

5

5

Hepatitis A

644

428

2

4

6

5

Hepatitis B (newly acquired)

0

0

0

5

5

5

Pertussis

1629

1287

5

5

6

4

Hepatitis C (unspecified)

144

120

0

4

4

4

Meningococcal disease (invasive)

0

0

0

9

9

4

Chlamydial infection

1261

431

2

2

3

3

Leptospirosis

162

130

3

6

8

3

Murray Valley encephalitis virus infection

913

538

0

2

2

2

Cryptosporidiosis

795

424

2

2

4

2

Chikungunya virus infection

414

253

0

2

2

2

Listeriosis

216

127

2

2

4

2

Measles

795

556

1

2

3

1

Botulism

464

347

0

2

2

1

Legionellosis

0

0

0

3

3

1