1.
Emerg Infect Dis
; 27(4)2021 04.
Article
in English
| MEDLINE | ID: covidwho-1088898
ABSTRACT
We determined secondary attack rates (SAR) among close contacts of 59 asymptomatic and symptomatic coronavirus disease case-patients by presymptomatic and symptomatic exposure. We observed no transmission from asymptomatic case-patients and highest SAR through presymptomatic exposure. Rapid quarantine of close contacts with or without symptoms is needed to prevent presymptomatic transmission.
Subject(s)
COVID-19 , Contact Tracing , Disease Transmission, Infectious , Quarantine , SARS-CoV-2/isolation & purification , Adult , Asymptomatic Diseases/epidemiology , COVID-19/diagnosis , COVID-19/epidemiology , COVID-19/prevention & control , COVID-19/transmission , Contact Tracing/methods , Contact Tracing/statistics & numerical data , Disease Transmission, Infectious/prevention & control , Disease Transmission, Infectious/statistics & numerical data , Female , Germany/epidemiology , Humans , Incidence , Male , Quarantine/methods , Quarantine/organization & administration , Risk Adjustment , Symptom Assessment/methods , Symptom Assessment/statistics & numerical data
2.
Emerg Infect Dis
; 27(2): 645-648, 2020 02.
Article
in English
| MEDLINE | ID: covidwho-953739
ABSTRACT
We report an outbreak of coronavirus disease with 74 cases related to a nightclub in Germany in March 2020. Staff members were particularly affected (attack rate 56%) and likely caused sustained viral transmission after an event at the club. This outbreak illustrates the potential for superspreader events and corroborates current club closures.