Risk of Mycobacterium tuberculosis infection in Somalia: national tuberculin survey 2006.
To estimate the annual risk of tuberculosis (TB) infection (ARTI) in Somalia a tuberculin survey was conducted in February/March 2006. Stratified cluster sampling was carried out within the 18 regions and 101 randomly selected primary schools. Tuberculin testing was done in 10 680 grade 1 schoolchildren. Transverse tuberculin reaction size was measured 72 hours later. The number of children with a satisfactory test read was 10 364. The overall BCG coverage was 54%. Based on frequency distribution of tuberculin reaction sizes, the ARTI in Somalia was estimated at 2.2% (confidence interval: 1.5%-3.2%). There was an annual decline of 2.6% comparing with a previous study in 1956.
Munim
A
A
World Health Organization, Hargeisa, Somalia. munima@som.emro.who.int
Rajab
Y
Y
Barker
A
A
Daniel
M
M
Williams
B
B
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D001500:BCG Vaccine; D002648:Child; D002669:Child Welfare / Q000706:statistics & numerical data; D002675:Child, Preschool; D016000:Cluster Analysis; D018563:Disease Notification / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D015994:Incidence; D007202:Indicators and Reagents; D007297:Inpatients / Q000706:statistics & numerical data; D008297:Male; D011159:Population Surveillance; D015995:Prevalence; D012111:Residence Characteristics / Q000706:statistics & numerical data; D012307:Risk Factors; D017678:Sex Distribution; D012998:Somalia / Q000453:epidemiology; D013334:Students / Q000706:statistics & numerical data; D014373:Tuberculin; D014376:Tuberculosis / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control; D014611:Vaccination / Q000706:statistics & numerical data
D001500:BCG Vaccine; D007202:Indicators and Reagents; D014373:Tuberculin