Preliminary results and conclusions of the COVID-19 case cluster study (Gangelt municipality)
Prof. Dr. Hendrik Streeck (Institute of Virology)
Prof. Dr. Gunther Hartmann (Institute for Clinical Chemistry and Clinical
Pharmacology, spokesman for the Cluster of Excellence ImmunoSensation2
)
Prof. Dr. Martin Exner (Institute for Hygiene and Public Health)
Prof. Dr. Matthias Schmid (Institute for Medical Biometry, Computer Science and
Epidemiology)
University Hospital Bonn, Bonn, April 9, 2020
Background: The community of Gangelt is one of the strongest in Germany
COVID19 affected places in Germany. It is believed that
Infection events due to a carnival meeting on February 15, 2020
is because several people tested SARSCoV2 positive after this session
were. The carnival session and the outbreak of the session is currently underway
examined more closely. It became a representative sample from the community
Gangelt (12,529 inhabitants) moved to the district of Heinsberg. The
World Health Organization (WHO) recommends a protocol that varies depending on
expected prevalence randomly 100 to 300 households are examined.
This sample was coordinated with its representativeness with Prof. Manfred
Güllner (Forsa).
Goal: The goal of the study is to keep the level of going through and still
SARS-CoV2 infections (percentage of all infected) taking place in the community
Gait to determine. In addition, the status of the current SARS-CoV2
Immunity can be determined.
Procedure: A form letter was sent to approximately 600 households. Overall took
approx. 1000 inhabitants from approx. 400 households took part in the study. There were questionnaires
collected, throat swabs taken and blood for the presence of antibodies (IgG,
IgA) tested. The intermediate results and go into this first evaluation
Inferences from approx. 500 people.
Preliminary result: An existing immunity of approx. 14% (antiSARS-CoV2 IgG positive, specificity of the method>, 99%) was determined. About 2% of the
Individuals had a current SARS-CoV-2 determined using the PCR method
Infection on. The infection rate (current infection or already gone through) was
a total of approx. 15%. The lethality (case fatality rate) based on the total number of
Infected in the community of Gangelt is based on the preliminary data from this
Study about 0.37%. Currently in Germany from Johns-Hopkins University
calculated lethality is 1.98% and is 5 times higher. The
Mortality based on the total population in Gangelt is currently 0.15%
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