Abstract
Introduction People addicted to illegal drugs were discussed as a risk
group for SARS-CoV-2 infections, with increased susceptibility and a severe
course of infection.
Methods In this study, the frequency of SARS-CoV-2 infections of
drug-dependent persons admitted to inpatient detoxification treatment in five
psychiatric hospitals was determined by implementing routine polymerase chain
reaction (PCR)-testing at admission (9/2020) up to one year. Main
substance-related diagnosis, comorbid respiratory disease, housing situation,
and current opioid maintenance treatment (OMT) were documented. An age-matched
control group of psychiatric inpatients without dependence from illegal drugs
was established.
Results Data from 1675 patients (male 79.5%; mean age 39.5 years; opioid
dependence 81.5% homelessness; 2.4%; chronic respiratory disease 6.3%) were
included. Out of 1365 patients dependent on opioids, 50.2% were currently in
OMT. Six (3 female; mean age 40.3 years) patients tested positive for SARS-CoV-2
by PCR (0.36%), and none showed symptoms of COVID-19. All six were opioid
dependent, 5 currently not in OMT. In the control group, 11 out of 1811
inpatients tested positive (0.61%).
Discussion The rate of SARS-CoV-2-infections in persons with dependence on
illegal drugs was not increased compared to a control group of psychiatric
patients. OMT is presumably a protective factor, e. g. in the participating
cities, OMT facilities offered an easy access to vaccination programs. In
contrast, drug addicts in the USA were severely affected by the pandemic.
Differences between countries might partially be explained by social factors
such as the higher availability of OMT in Germany and a much lower frequency of
homelessness.
Keywords
opioid addiction - SARS-CoV-2 - risk factors - prevention - opioid maintenance treatment