Australia Trachoma Surveillance Report 2011

South Australia Results 2011

Page last updated: 09 April 2013

  • The regions for which data were reported in 2011 differed from the regions for which data were reported in previous years. Communities screened in previous years were reclassified in this report for consistency with 2011 reporting.
  • Data collected to 29 February 2012 were included in this year’s report.
  • Some trend figures do not include data collected in 2010 due to differences in age ranges previously reported.
  • Interpretation of results and trends over time were limited due to small sample sizes.

Screening coverage

  • Overall, South Australia has increased screening coverage, both in the number of communities screened and at-risk population screened, with the greatest gains in the Far North region (Figure 3.2).
  • Community coverage of trachoma screening in the two regions screened was 41%, with 19 of the 46 designated at-risk communities being screened (Table 3.1).
  • The proportion of children screened aged 5-9 years in those 19 at-risk communities was 77%.

Clean face prevalence

  • The overall prevalence of clean faces among screened children aged 5-9 in SA was 88%, ranging from 47% to 94% (Table 3.1).

Trachoma prevalence

  • The overall prevalence of trachoma in children screened aged 5-9 in SA was 4% (Table 3.1).
  • No active trachoma was detected in 58% (11/19) of at-risk communities screened (Table 3.3).
  • Of communities screened, 26% (5/19) had a prevalence of trachoma of over 10% (Table 3.3).
  • The highest prevalence of trachoma among children aged 5-9 years was 32% within a community in the Eyre/Western region.
  • One not-at-risk community was screened in 2011, with no active trachoma detected.

Treatment coverage

  • In 8/19 of at-risk communities screened, treatment was required for trachoma (Table 3.2).
  • Of the active cases requiring treatment for trachoma, 94% (34/36) received treatment (Table 3.2).
  • An estimated 98% of the population requiring treatment was treated with azithromycin (Table 3.2)

Trichiasis

  • Of the at-risk population adults, 37% (712/1921) were screened for trichiasis in eight communities.
  • Among adults screened, the prevalence of trichiasis was 1% (8/716) (Table 3.4).

SAFE strategy compliance

  • Facial cleanliness resources were present and in use in 37% (7/19) of communities screened. The presence of facial cleanliness resources and programs were reported for 55% (11/19) of screened communities (Table 3.5).
  • Environmental conditions were reported for 15/19 communities screened. Of these, 75% reported good environmental conditions, 10% variable (Table 3.5).
Figure 3.1 Colour-coded trachoma prevalence and number of communities screened/number of communities at-risk communities screened in 2011 in SA
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Map of SA, with shading legend distinguishing the trachoma prevalence and community screening coverage in communities designated as ‘at-risk’ of trachoma and screened in 2011 in SA
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Figure 3.2 Number of communities screened* by year and region in the SA

Table advises on trachoma treatment coverage in 2011 by region in SA (Eyre/Western and Far North)

* Including children in communities screened but not at risk


Figure 3.3 Population screening coverage* of children aged 5-9 years over all regions containing at least one at-risk community by year and region in SA

Table advises on the number of at-risk communities according to different trachoma prevalence of children 5-9years

*Calculated as the number of children screened (in at-risk and not-at-risk communities) in region containing at least one at-risk community divided by the estimated population of region

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Figure 3.4 Proportion of screened *children aged 5-9 years who had a clean face by year and region in SA†

Table advises on trichiasis screening coverage, prevalence and treatment among Aboriginal adults aged over 40 years in 2011 by region in SA

* Including children in communities screened but not at risk
† Where 10 or more children were screened


Figure 3.5 Trachoma prevalence among screened* children aged 5-9 years by year and region in SA†

Table advises on adherence to SAFE protocols in screened communities in 2011 by region in SA (Eyre/Western and Far North)

* Including children in communities screened but not at risk
† Where 10 or more children were screened

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Figure 3.6 Screening coverage of children in at-risk communities in 2011 by age group and region in SA

histogram demonstrates screening coverage of children in at-risk communities in 2011 by age group (1-4years, 5-9 years, and 10-14 years) and region in SA (Eyre/Western and Far North)

* Coverage levels over 100% due to population estimates
† Number of children screened


Figure 3.7 Trachoma prevalence among children screened in at-risk communities in 2011 by age group and region in SA *

histogram demonstrates trachoma prevalence in children screened in at-risk communities in 2011 by age group (1-4 years, 5-9 years and 10-14 years) and region in SA (Eyre/Western and Far North) in communities where more than 5 children were screened.

* In communities where more than 5 children were screened
† Number of children detected with trachoma
Note small numbers in all regions

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Figure 3.8 Proportion of screened children who had a clean face in 2011 by age group and region in SA*

histogram demonstrates the proportion of screened children who had a clean face in 2011 by age group and region in SA * In communities where more than 5 children were screened
† Number of children observed to have a clean face


Figure 3.9 Trachoma prevalence among screened at-risk communities in 2011 by region in SA

histogram demonstrates trachoma prevalence among screened at-risk communities in 2011 by region in SA

* Number of communities screened for trachoma

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Table 3.1 Trachoma screening coverage, trachoma prevalence and clean face prevalence in SA in 2011 by region

* Calculated as the proportions of children with active trachoma in age groups 1-4 and 5-9 years, weighted by the estimated population sizes of each age group. This was done in order to account for uneven coverage with respect to age groups

At-risk communities
Not-at-risk communities
Eyre/Western
Far North
Total
Total
Number of communities at risk
23
23
46
Number of communities screened
5
14
19
1
Age group (years)
1-4
5-9
10-14
1-14
1-4
5-9
10-14
1-14
1-4
5-9
10-14
1-14
1-4
5-9
10-14
1-14
Estimated number of Aboriginal children at risk*
352
394
382
1128
586
537
553
1676
938
931
935
2804
88
105
87
280
Children examined for clean face
3
86
61
150
147
597
344
1088
150
683
405
1238
0
0
0
0
Children with clean face
3
40
42
85
145
559
344
1048
148
599
386
1133
0
0
0
0
Clean face prevalence
100%
47%
69%
57%
99%
94%
100%
96%
99%
88%
95%
92%
Children examined for trachoma
4
121
102
227
147
597
366
1110
151
718
468
1337
0
7
22
29
Trachoma screening coverage
1%
31%
27%
20%
25%
111%
66%
66%
16%
77%
50%
48%
0%
7%
25%
10%
Children with active trachoma
2
9
5
16
0
20
0
20
2
29
5
36
0
0
0
0
Active trachoma prevalence
50%
7%
5%
7%
0%
3%
0%
2%
1%
4%
1%
3%
0%
0%
0%
Trachoma prevalence 1-9 years
9%
3%
4%
0%
Trachoma prevalence 1-9 years (weighted by population)†
28%
2%
3%
0%

Table 3.2 Treatment coverage in SA in 2011 by region

* Estimated using average number of household contacts per child in communities who reported number of contacts requiring treatment and population statistics (see Methodology for detail)

At-risk communities
Eyre/Western
Far North
Total
Number of communities at risk
23
23
46
Number of communities requiring treatment
2
6
8
Age group (years)
0-4
5-9
10-14
15+
All
0-4
5-9
10-14
15+
All
0-4
5-9
10-14
15+
All
Active cases requiring treatment
2
9
5
N/A
16
0
20
0
N/A
20
2
29
5
N/A
36
Active cases received treatment
2
9
5
N/A
16
0
18
0
N/A
18
2
27
5
N/A
34
% Active cases received treatment
100%
100%
100%
N/A
100%
0%
90%
0%
N/A
90%
100%
93%
100%
N/A
94%
Estimated contacts requiring treatment according to jurisdictional interpretation of the guidelines
306
160
466
Number of contacts who received treatment
27
34
37
208
306
9
17
15
108
149
36
51
52
316
455
Estimated overall treatment coverage (total)*
100%
93%
98%
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Table 3.3 Number of communities according to different trachoma prevalence ranges (among children aged 5-9 years) in SA in 2011
At-risk communities
Not-at-risk communities
Prevalence
Eyre/Western
Far North
Total
0%
3
60%
8
57%
11
58%
1
100%
>0% but <5%
0
0%
1
7%
1
5%
0
0%
≥5% but <10%
0
0%
2
14%
2
11%
0
0%
≥10% but <20%
0
0%
3
21%
3
16%
0
0%
≥20%
2
40%
0
0%
2
11%
0
0%
Total
5
14
19
1
    Table 3.4 Trichiasis screening coverage, prevalence and treatment among Aboriginal adults aged over 40 years in 2011 in SA
    Eyre/Western
    Far North
    Total
    Adult population of at-risk communities
    518
    1402
    1921
    Number of communities at risk
    5
    14
    46
    Number of communities screened for trichiasis
    2
    40%
    5
    36%
    7
    15%
    Adults examined (% of estimated population at risk)
    45
    9%
    667
    48%
    712
    37%
    With trichiasis (% of adults examined)
    2
    4%
    6
    1%
    8
    1%
    Offered ophthalmic consultation
    2
    6
    2
    Surgery in past 12 months
    N/R
    N/R
    N/R
    N/R
    N/R
    N/R
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    Table 3.5 Adherence to SAFE protocols in screened* communities in 2011 in SA
    Eyre/Western
    Far North
    Total
    Surgery for trichiasis
    Referral process exists
    4
    100%
    7
    47
    11
    55%
    No referral process
    0
    0%
    0
    0%
    0
    0%
    Referral unknown
    0
    0%
    0
    0%
    0
    0%
    Not Reported
    0
    0%
    8
    53%
    9
    45%
    Antibiotics
    Distribution in line with CDNA guidelines
    2
    50%
    15
    100%
    18
    90%
      Active cases and contacts treated within two weeks
    0
    0%
    6
    40%
    0
    0%
      No treatment required
    2
    100%
    9
    60%
    0
    0%
    Distribution not in line with CDNA guidelines
    2
    50%
    0
    0%
    2
    10%
      Active cases and contacts treated but not within two weeks
    2
    50%
    0
    0%
    0
    0%
      Not all contacts treated†
    0
    0%
    0
    0%
    0
    0%
      Active cases only treated
    0
    0%
    0
    0%
    0
    0%
      No distribution
    0
    0%
    0
    0%
    0
    0%
    Facial cleanliness resources
    Present and used
    2
    50%
    4
    27%
    7
    35%
    Present, not used
    0
    0%
    1
    7%
    1
    5%
    No resources
    1
    25%
    2
    13%
    3
    15%
    Not reported/unsure
    1
    25%
    8
    53%
    9
    45%
    Facial cleanliness program
    Program exists
    1
    7%
    2
    10%
    No program
    3
    75%
    4
    27%
    7
    35%
    Not reported/Unsure
    1
    25%
    10
    66%
    11
    55%
    Environmental Conditions
    Good
    3
    75%
    11
    73%
    15
    75%
    Variable
    1
    25%
    1
    7%
    2
    10%
    Poor
    0
    0%
    0
    0%
    0
    0%
    Not reported
    0
    0%
    3
    20%
    3
    15%
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