Post on 18-Jan-2018
IDENTIFYING THE RATE OF
STRONGYLOIDES STERCORALIS
INFECTION AND RELATED FACTORS
IN SOLDIERS ON THE BORDER
IN SOUTHWEST VIETNAM Tran Minh Tuong
(Southern Military Preventive Medical Center)
Strongyloides stercoralis
Objective
+ Investigation of Strongyloides stercoralis
infection rate.
+ Determination of related factors on
Strongyloides stercoralis infection.
Subjects and method
• Subjects: 752 soldiers working on the
border in Southwest Vietnam were studied
during the period from 4/2013 to 8/2014.
• Method: Descriptive study
Results and Discussion
Prevalence of Strongyloides stercoralis infections
The number of participants who were infected with Strongyloides stercoralis was 40 (5.32%), and uninfected was 712 (94.68%). The rate of infection around the world is 2-20%. According to many authors, precise data on the prevalence of this disease cannot be assessed because there are no symptoms and a lack of adequate statistics.
Breakdown of worm infection by age group
There is a difference in Strongyloides stercoralis infection in different age groups, with statistical significance at p<0.05. Those aged over 40 have the highest prevalence of infection (52.5%).
Prevalence of Strongyloides stercoralis infection among those with regular professional contact with soil
OR=2.9
pOR
Regular direct contact with soil
Those who have regular direct contact with soil in our study had a
Strongyloides stercoralis infection risk 2.9 times higher than those who did
not, with p <0.05.
Prevalence of Strongyloides stercoralis infection with regard to eating vegetables and drinking unpurified water
Frequency of eating vegetables and drinking unpurified water
POR
p<0.05
OR= 1.9
The group in the habit of eating raw vegetables or drinking unpurified water
regularly, had a Strongyloides stercoralis infection rate 1.9 times higher than the
group who did not have those habits, with p <0.05.
Prevalence of Strongyloides stercoralis infection in people with a history of stomach pain
In the group with a history of stomach pain, the infection risk was 2.2
times higher than the group with no history of stomach pain, with
p<0.05.
A history of stomach pain
POR
p<0.05
OR = 2.2
Prevalence of Strongyloides stercoralis infection in people who do/do not de-worm regularly
De-worming POR
p<0.05
OR= 1.9
The prevalence of Strongyloides stercoralis infection in the group
who had not periodically de-wormed themselves was 1.9 times higher
than the other group. This difference is statistically significant, with
p<0.05.
Prevalence of Strongyloides stercoralis infection with regard to feeding dogs and cats
Feeding dogs/cats
P
p>0.05
The prevalence of worm infection among people who feed dogs and cats compared to people who do not, has no difference for statistical significance (p> 0.05).
Prevalence of Strongyloides stercoralis infection in people who do not de-worm cats and dogs regularly
Periodic de-worming of dogs and cats
P
p>0.05
587
165
752
The prevalence of worm infection among people who feed dogs and cats without de-worming their pets, compared with people who feed and regularly de-worm their pets, has no difference for statistical significance (p> 0.05).
CONCLUSION• The Strongyloides stercoralis infection rate is
5.32%
• it is most likely to affect people aged over 40
• it is closely linked to jobs or regular habits
involving direct contact with the soil.
CONCLUSIONThe risk factors that increase the prevalence of
infection include:
• Often eating raw vegetables, and washing raw
vegetables improperly.
• A history of stomach pain.
• No periodic de-worming for people.
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