Prevalence of HIV, hepatitis B/C and syphilis infection among people who inject drugs over the period 2013 – 2023 (data from SPHTDAA Laboratory, Sofia)

Prevalence of psychoactive substance use
Prevalence of medication use
Prevalence of drug use
Drug Prevention
Treatment Supply
Treatment Demand
Health consequences
Harm reduction
Drug-related crimes
Drug market
Drug use and prison
Monitoring of publications
Attitudes to legal framework changes

Database (1995-2023) (.xlsx)

Prevalence of HIV infection among people who inject drugs (PWID) over the period 2013 – 2023

20132014201520162017201820192020202120222023
Total number of PWID who were tested822661698332319378383254305262203
Males607366550240234281272167220192145
Females21512214892859711187857058
Number of PWID with a positive test result2825301019134937153832
Males211524717124028143029
Females71632199183
Proportion positive (%)3.4%3.8%4.3%3.0%6.0%3.4%12.8%14.6%4.9%14.5%15.8%
Males3.5%4.1%4.4%2.9%7.3%4.3%14.7%16.8%6.4%15.6%20.0%
Females3.3%0.8%4.1%3.3%2.4%1.0%8.1%10.3%1.2%11.4%5.2%
Age <25
Number of PWID who were tested665286572514611162
Number of PWID with a positive test result4161000000
Proportion positive (%)6.1%1.9%7.0%1.8%0.0%0.0%0.0%0.0%0.0%0.0%
Age 25-34
Number of PWID who were tested469228340137803627532216
Number of PWID with a positive test result14111234137333
Proportion positive (%)3.0%4.8%3.5%2.25.0%36.1%25.9%5.7%13.6%18.75
Age > 34
Number of PWID who were tested287198272138273333221241224185
Number of PWID with a positive test result10412693630123529
Proportion positive (%)3.5%2.0%4.4%4.3%3.3%10.8%13.6%5.0%15.6%15.7%
Note: PWID are defined as people who have injected drugs at some point in their life.

Prevalence of hepatitis B infection among people who inject drugs (PWID) over the period 2013 – 2023

20132014201520162017201820192020202120222023
Total number of PWID who were tested75663469833298359374118259118203
Males560350550240712572668218594144
Females196124148922710210836742459
Number of PWID with a positive test result3438256519229152130
Males2721216416187101725
Females74401342545
Proportion positive (%)4.5%6.0%3.6%1.8%5.1%5.3%5.9%7.6%5.8%17.8%14.8%
Males4.8%6.0%3.8%2.5%5.6%6.2%6.8%8.5%5.4%18.1%17.4%
Females3.6%3.2%2.7%0.0%3.7%2.9%3.7%5.6%6.8%16.7%8.5%
Age <25
Number of PWID who were tested685386570241431182
Number of PWID with a positive test result20100010110
Proportion positive (%)2.9%0.0%1.2%0.0%0.0%0.0%7.1%0.0%9.1%12.5%0.0%
Age 25-34
Number of PWID who were tested43422534013720903415441516
Number of PWID with a positive test result2410912342324
Proportion positive (%)5.5%4.4%2.6%0.7%10.0%3.3%11.8%13.3%6.8%13.3%25.0%
Age > 34
Number of PWID who were tested2541962721387824532610020495185
Number of PWID with a positive test result815155316177111826
Proportion positive (%)3.1%7.7%5.5%3.6%3.8%6.5%5.2%7.0%5.4%18.9%14.1%

Prevalence of hepatitis C infection among people who inject drugs (PWID) over the period 2013 – 2023

20132014201520162017201820192020202120222023
Total number of PWID who were tested812658698332319368383270302262204
Males601367550240234265272175217192145
Females211123148928510311195857059
Number of PWID with a positive test result509439430192245241300187241197175
Males381242349159180189229126181150129
Females12878813365527161604746
Proportion positive (%)62.7%66.7%61.6%57.8%76.8%65.5%78.3%69.3%79.8%75.2%85.8%
Males63.4%65.9%63.5%66.25%76.9%71.3%84.2%72.0%83.4%78.1%89.0%
Females60.7%63.4%54.7%35.9%76.5%50.5%64.0%64.2%70.6%67.1%78.0%
Age <25
Number of PWID who were tested76508657122414611162
Number of PWID with a positive test result451945295310440
Proportion positive (%)59.2%38.0%52.3%50.9%41.7%12.5%7.2%0.0%36.4%25.0%0.0%
Age 25-34
Number of PWID who were tested20722834013796963624532216
Number of PWID with a positive test result1731511968160473515331114
Proportion positive (%)83.6%66.257.7%59.1%62.5%49.0%97.2%62.5%62.3%50.0%87.5%
Age > 34
Number of PWID who were tested287212272138211248333240238224186
Number of PWID with a positive test result20715018982180191264172204182161
Proportion positive (%)72.1%70.8%69.5%59.4%85.3%77.0%79.3%71.7%85.7%81.25%86.6%

Prevalence of syphilis infection among people who inject drugs (PWID) over the period 2012 – 2021

2012201320142015201620172018201920202021
Total number of PWID who were tested637777620698332319361369254301
Males429551351550240234265350162217
Females208226109148928596199284
Number of PWID with a positive test result71464328171712261323
Males29211914108818816
Females42251114794857
Proportion positive (%)11.1%5.9%6.9%4.0%5.1%5.3%3.3%7.0%5.1%7.6%
Males6.8%3.8%5.4%2.5%4.2%3.4%3.0%5.1%4.9%7.4%
Females20.2%11.1%10.1%9.5%7.6%10.6%4.2%42.1%5.4%8.3%
Age <25
Number of PWID who were tested676855865712250711
Number of PWID with a positive test result3332320000
Proportion positive (%)4.5%4.4%5.5%2.3%5.3%16.7%0.0%0.0%0.0%0.0%
Age 25-34
Number of PWID who were tested408448210340137969492053
Number of PWID with a positive test result442615102132314
Proportion positive (%)10.8%5.8%7.1%2.9%1.5%13.5%2.1%33.3%5.0%7.6%
Age > 34
Number of PWID who were tested162261195272138211242360227237
Number of PWID with a positive test result2417121612210231219
Proportion positive (%)14.8%6.5%6.2%5.9%8.7%0.9%4.1%6.4%5.3%8.0

Source: State Psychiatric Hospital for Treatment of Drug Addiction and Alcoholism (SPHTDAA), Sofia, NFP, NCPHA.