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.

THANK YOU FOR YOUR ATTENTION !