Effect of family contact screening effect is relevant…. activetuberculosis 60%↓
Results of Family Contact Data Analysis of TuberculosisPatients
It has been confirmed that the risk of active tuberculosiscan be reduced by 60 percent if a family-contact person is examined.
In addition, a family contact examination showed that iftreatment is completed when diagnosed with latent tuberculosis infection, theincidence of tuberculosis could be reduced by 74 percent.
The Korea Centers for Disease Control and Prevention (KCDC)released the results of its analysis of family contact surveys on families andcohabitants who lived in the same space as tuberculosis patients or had regularcontact with them.
Contactor investigations include tuberculosis tests (thoraxX-ray examination, (choreography and culture) guest tests), latent tuberculosisinfection tests (Tuberculin skin test, TST), and interferon-gamma releasingassay (IGRA).
According to the main contents of "Analysis of FamilyContact Data for Tuberculosis Patients," 137,702 (99.5%) out of 138,335family contact patients were tested for tuberculosis between 2015 and 2018 and1,180 (0.9%) tuberculosis patients were confirmed.
Of 53,565 people who did not conduct latent tuberculosisinfection tests, 544 (1.0%) had tuberculosis cases.
In the case of latent tuberculosis infection tests, 20,320(28 percent) out of 82,957 people tested positive, and 6,367 (27.4 percent)received anti-drug treatment, of which 5,357 (84.1 percent) completedtreatment.
According to the analysis of the epidemiologicalcharacteristics of family contacts, 80,911 women, 58.5 percent, were moresubject to the examination than men (57,424 people, 41.5 percent), and 41,130men (41,130 people, 60.8 percent) were compared to women (26,508, 39.2percent).
The relationship between the examinee and the indicatorpatient is: Children (children, grandchildren), 59,689 (43.2%), spouses (41,333(29.9%), other cohabitants (brothers, sisters, relatives, epidemiologists)25,45 (14.9%), parents (16%), grandparents (16%), and grandparents (43,68%).
Through this, it was confirmed that the propagation routebetween families of high-risk TB infections was mainly carried out from parentsand grandparents to children.
An analysis of the effectiveness of family contactexaminations confirmed that among those subject to family contact examinationsof tuberculosis patients, the risk of active tuberculosis can be reduced byabout 60 percent compared to those who did not.
In particular, if a person diagnosed with latent tuberculosisthrough a family contact examination, completing treatment could reduce theincidence of tuberculosis by 74% compared to the case without treatment.
In addition, the risk of tuberculosis was 6.11 times higherthan the risk of receiving a family contact examination and latent tuberculosisinfection.
Since tuberculosis spreads to the air through coughing andconversation, it is easy to spread tuberculosis germs to families (parent,brothers, sisters, spouses, children, etc.) who spend time together every day.
According to data from the disease health integrated managementsystem, family contacts are high-risk groups with a risk of developingtuberculosis about 17 times higher than that of the general population group,and tuberculosis propagation is needed through contact investigation.
"We will further strengthen our tuberculosis preventionand management policy for family contacts of tuberculosis patients who are athigh risk of developing tuberculosis," said Jeong Eun-kyung, head of theKorea Centers for Disease Control and Prevention. "We are conducting moreactive family contact surveys by expanding the number of subjects to beinvestigated to add cohabitants who have been in contact with each other on aregular basis."
In addition, we hope that active participation andcooperation will be made to minimize the spread of tuberculosis by detectingand treating tuberculosis patients at an early date, and to
preventtuberculosis by detecting and treating latent tuberculosis infections, shesaid.
