Figure 1: Trends of HIV, HBV, HCV and Treponema pallidum frequency among blood donors
FIGURE 1
Characteristics |
Number (%) |
|
Gender |
|
|
Male |
400377 |
(83.3) |
Female |
79988 |
(16.7) |
Age groupe (years) |
|
|
18-30 |
229274 |
(47.7) |
31-45 |
188982 |
(39.9) |
46-60 |
62109 |
(12.9) |
Types of donor |
|
|
Regular |
73378 |
(15.3) |
First-time |
95962 |
(19.9) |
Replacement |
311025 |
(64.7) |
Transfusion Center |
|
|
Brazzaville |
211262 |
(43.9) |
Pointe Noire |
177699 |
(36.9) |
Southwest network |
53518 |
(11.1) |
North network |
37886 |
(7.9) |
Table 1: Socio-demographic characteristics of blood donors.
Infections |
Number |
Frequency in infected population |
Frequency in blood donor |
HIV |
13450 |
22.74% |
2.80% |
HBV |
35547 |
60.10% |
7.40% |
HCV |
8789 |
14.86% |
2.10% |
T.pallidum |
1359 |
2.30% |
0.34% |
Table 2: Frequency of HIV, HBV, HCV and T. pallidum infections among blood donors.
480365 as population for HIV and HBV frequency infection calculation in overall blood donor population; 418268 for HCV and 397279 for TP calculation
Co-infections |
Number |
Frequency in co-infected population |
Frequency in blood donor |
HIV-HBV |
943 |
45.9% |
0.2% |
HBV-HCV |
660 |
32.1% |
0.16% |
HIV-HCV |
288 |
14% |
0.07% |
HIV-T. |
75 |
3.6% |
0.02% |
HBV-T. |
55 |
2.7% |
0.014% |
HCV-T. |
34 |
1.7% |
0.009% |
Table 3:Frequency of HIV, HBV, HCV and T. pallidum co-infections among blood donors
480365 as population for HIV-HBV co-infection calcula- tion; 418268 as common denominator for HBV-HCV, HIV- HCV co-infection and 397279 for HIV-TP, HBV-TP and HCV-TP co-infection calculation
Variables |
HBV reactivity |
COR (95% CI) |
P-Value |
||
Reactive (*) |
Non-reactive |
Total |
|||
Gender |
|
|
|
|
|
Male |
32178 (8) |
368199 |
400377 |
1.99 (1.92 – 2.06) |
0.001 |
Female |
3369 (4.2) |
76619 |
79988 |
1 |
|
Age group |
|
|
|
|
|
18-30 |
19774 (8.6) |
209500 |
229274 |
2.37 (2.27 – 2.48) |
0.001 |
31-45 |
13390 (7.1) |
175592 |
188982 |
1.91 (1.83 – 2) |
0.001 |
46-60 |
2383 (3.8) |
59726 |
62109 |
1 |
|
Donor type |
|
|
|
|
|
Regular |
926 (1.3) |
72452 |
73378 |
1 |
|
First-time |
5798 (6) |
90164 |
95962 |
5.03 (4.69 – 5.39) |
0.001 |
Replacement |
28823 (9.3) |
282202 |
311025 |
7.99 (7.48 - 8.53) |
0.001 |
Table 4: Frequency of HBV by gender, age and type of donor type
COR= Crude Odds Ratio ; CI= Confidence interval ; (*) : sero-reactivity percentage in the group. 480365 as overall number of donation
Variables |
HIV reactivity |
COR (95% CI) |
P-Value |
||
Reactive (*) |
Non-reactive |
Total |
|||
Gender |
|
|
|
|
|
Female |
2646 (3.3) |
77342 |
79988 |
1.23 (1.18 – 1.28) |
0.001 |
Male |
10804 (2.7) |
389573 |
400377 |
1 |
|
Age group |
|
|
|
|
|
18-30 |
5371 (2.3) |
223903 |
229274 |
1 |
|
31-45 |
6436 (3.3) |
182546 |
188982 |
1.3 (1.23 – 1.37) |
0.001 |
46-60 |
1643 (2.6) |
60466 |
62109 |
1.13 (1.07 1.2) |
0.001 |
Donor type |
|
|
|
|
|
Regular |
517 (0.7) |
72861 |
73378 |
1 |
|
First-time |
2130 (2.2) |
93832 |
95962 |
3.2 (2.91 – 3.52) |
0.001 |
Replacement |
10803 (3.5) |
300222 |
311025 |
5.07 (4.64- 5.54) |
0.001 |
Table 5: Frequency of HIV by gender, age and type of donor
COR= Crude Odds Ratio ; CI= Confidence interval ; (*) : sero-reactivity percentage in the group 480365 as overall number of donation
Variables |
HCV reactivity |
COR (95% CI) |
P-Value |
||
Reactive (*) |
Non-reactive |
Total |
|||
Gender |
|
|
|
|
|
Male |
7380 (2.1) |
342243 |
349623 |
1.03 (0.97 – 1.09) |
0.115 |
Female |
1409 (2) |
67236 |
68645 |
1 |
|
Age group |
|
|
|
|
|
18-30 |
3952 (1.9) |
197758 |
201710 |
0.99 (0.93 – 1.05) |
0.995 |
31-45 |
3490 (2.3) |
145260 |
148750 |
1.19 (1.12 – 1.27) |
0.001 |
46-60 |
1347 (1.9) |
66461 |
67808 |
1 |
|
Donor type |
|
|
|
|
|
Regular |
330 (0.4) |
62170 |
82500 |
1 |
|
First-time |
1307 (1.8) |
71304 |
72611 |
3.45(3.06 – 3.89) |
0.001 |
Replacement |
7152 (2.7) |
256005 |
263157 |
5.26 (4.71- 5.88) |
0.001 |
Table 6: Frequency of HCV by gender, age and type of donor type
COR= Crude Odds Ratio ; CI= Confidence interval. (*) : sero-reactivity percentage in the group; 418268 as overall number of donation
Variables |
T. pallidum reactivity |
COR (95% CI) |
P-Value |
||
Reactive (*) |
Non-reactive |
Total |
|||
Gender |
|
|
|
|
|
Male |
1168 (0.4) |
295721 |
296889 |
2.8 (1.78 – 2.42) |
0.001 |
Female |
191 (0.2) |
100199 |
100390 |
1 |
|
Age group |
|
|
|
|
|
18-30 |
541 (0.3) |
178799 |
179340 |
0.98 (0.83 – 1.15) |
0.658 |
31-45 |
621 (0.4) |
153636 |
154257 |
1.3 (1.11 – 1.53) |
0.001 |
46-60 |
197 (0.3) |
63485 |
63682 |
1 |
|
Donor type |
|
|
|
|
|
Regular |
113 (0.2) |
50267 |
50380 |
1 |
|
First-time |
264 (0.2) |
119495 |
119759 |
0.98 (0.79 – 1.22) |
0.528 |
Replacement |
982 (2.4) |
226158 |
227140 |
1.93 (1.59 - 2.35) |
0.001 |
Table 7: Frequency of T. pallidum by gender, age and type of donor type
COR= Crude Odds Ratio ; CI= Confidence interval. (*) : sero-reactivity percentage in the group; 397279 as overall number of donation.
Figure 1: Trends of HIV, HBV, HCV and Treponema pallidum frequency among blood donors
Figures at a glance