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close this bookEpidemiological Fact Sheet on HIV/AIDS and Sexually Transmitted Infections: Chad (UNAIDS, 2000, 12 p.)
View the document(introduction...)
View the documentCountry Information
View the documentEstimated number of people living with HIV/AIDS
View the documentHIV sentinel surveillance
View the documentMaps of HIV sentinel sites
View the documentReported AIDS cases
View the documentCurable sexually transmitted infections (STIs)
View the documentHealth service indicators
View the documentKnowledge and behaviour
View the documentSources
View the documentAnnex: HIV Surveillance data by site

Reported AIDS cases

AIDS cases by year of reporting

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

Total

Unkn

0

0

0

0

0

0

0

2

2

7

10

38

165

363

1010

1268

1132

1242

2753

2129


10121


Date of last report: 03/Jun/99

Following WHO and UNAIDS recommendations, AIDS case reporting is carried out most countries. Data from individual AIDS cases is aggregated at the national level and sent to WHO. However, case reports come from surveillance systems of varying quality Reporting rates vary substantially from country to country and low reporting rates are common in developing countries due to weaknesses in the health care and epidemiological systems. In addition, countries use different AIDS case definitions. main disadvantage of AIDS case reporting is that it only provides information on transmission patterns and levels of infection approximately 5-10 years in the past, limiting its usefulness for monitoring recent HIV infections.

Despite these caveats, AIDS case reporting remains an important advocacy tool and is useful in estimating the burden of HIV-related morbidity as well as for short-term planning of health care services. AIDS case reports also provide information on the demographic and geographic characteristics of the affected population and on the relative importance of the various exposure risks. In some situations, AIDS reports can be used to estimate earlier HIV infection patterns using back-calculation. AIDS case reports and AIDS deaths have been dramatically reduced in industrialized countries with the introduction of HAART (Highly Active Anti-Retroviral Therapy).

AIDS cases by mode of transmission

Hetero: Heterosexual contacts.

Homo/Bi: Homosexual contacts between men.

IDU: Injecting drug use. This transmission category also includes cases in which other high-risk behaviours were reported, in addition to injection of drugs.

Blood: Blood and blood products.

Perinatal: Vertical transmission during pregnancy, birth or breastfeeding.

NS: Not specified/unknown.

Sex

Trans. Group

<96

1996

1997

1998

1999

Unkn

Total

%

All

Total


1001

2581

2129



5711

100.0


Hetero


940

2380

2057



5377

94.2


Homo/Bi


0

0

0



0

0.0


IDU


0

0

0



0

0.0


Blood


0

0

0



0

0.0


Perinatal


61

201

72



334

5.8


Other Known


0

0

0



0

0.0


Unknown


0

0

0



0

0.0

Male

Total


542

1356

869



2767

100.0


Hetero


494

1255

832



2581

93.3


Homo/Bi


0

0

0



0

0.0


IDU


0

0

0



0

0.0


Blood


0

0

0



0

0.0


Perinatal


48

101

37



186

6.7


Other Known


0

0

0



0

0.0


Unknown


0

0

0



0

0.0

Female

Total


459

1225

1260



2944

100.0


Hetero


446

1125

1225



2796

95.0


IDU


0

0

0



0

0.0


Blood


0

0

0



0

0.0


Perinatal


13

100

35



148

5.0


Other Known


0

0

0



0

0.0


Unknown


0

0

0



0

0.0

NS

Total










Hetero










IDU










Blood










Perinatal










Other Known










Unknown









Aids cases by age and sex

Sex

Age

<96

1996

1997

1998

1999

Unkn.

Total

%


All


1242

2753

2129



6124

100.0

All











0-4


49

179

72



300

4.9


5-14


14

35

10



59

1.0


15-19


76

131

59



266

4.3


20-29


349

812

411



1572

25.7


30-39


266

661

456



1383

22.6


40-49


98

300

157



555

9.1


50-59


6

77

46



129

2.1


60+


6

21

44



71

1.2


NS


364

533

874



1771

28.9


All


542

1356

832



2730

100.0

Male











0-4


35

84

30



149

5.5


5-14


13

17

8



38

1.4


15-19


39

42

13



94

3.4


20-29


169

322

158



649

23.8


30-39


155

384

279



818

30.0


40-49


73

216

99



388

14.2


50-59


14

67

39



120

4.4


60+


5

18

39



62

2.3


NS


39

206

167



412

15.1

Female

All


459

1225

644



2328

100.0


0-4


12

99

35



146

6.3


5-14


1

18

2



21

0.9


15-19


37

89

45



171

7.3


20-29


179

489

245



913

39.2


30-39


111

276

167



554

23.8


40-49


25

84

56



165

7.1


50-59


6

10

6



22

0.9


60+


1

3

5



9

0.4


NS


87

157

83



327

14.0

NS

All


241

172

653



1066

100.0


0-4


2

0

7



9

0.8


5-14


0

0

0



0

0.0


15-19


0

0

1



1

0.1


20-29


1

1

8



10

0.9


30-39


0

1

10



11

1.0


40-49


0

0

2



2

0.2


50-59


0

0

1



1

0.1


60+


0

0

0



0

0.0


NS


238

170

624



1032

96.8