Symptom presentation of SARS-CoV-2-positive and negative patients: a nested case-control study among patients calling the emergency medical service and medical helpline.

Objective: Currently effective symptom-based screening of patients suspected of COVID-19 is limited. We aimed to investigate age-related differences in symptom presentations of patients tested positive and negative for SARS-CoV-2.

Design: SETTING: Calls to the medical helpline (1-8-1-3) and emergency number (1-1-2) in Copenhagen, Denmark.

Consequences of coronavirus disease-2019 (COVID-19) lockdown on infection-related hospitalizations among the pediatric population in Denmark.

It remains unknown how Coronavirus disease-2019 (COVID-19) prevention measures implemented on March 12, 2020, have affected the rate of pediatric infection-related hospitalizations in Denmark. Therefore, we investigated the rate of pediatric infection-related hospitalizations during the COVID-19 pandemic. We used a retrospective cohort design and included all Danish children < 18 years.

[Tobacco and pregnancy in Denmark].

The risks of smoking during pregnancy are serious and well-documented. It is assumed that we do not identify all pregnant women with tobacco and nicotine consumption. Therefore, a new national Danish guideline presents a new screening and referral model for use from early pregnancy.

Children Hospitalized With Varicella in Denmark: Sensitivity of the National Patient Register.

Background: Varicella, common in childhood and most often self-limiting, may cause complications including bacterial superinfection, pneumonia and encephalitis. Universal childhood varicella vaccination has been introduced in several countries, but is controversial in Europe. In Denmark, varicella is not part of the national immunization program and there is no national surveillance of varicella.