Related references
Note: Only part of the references are listed.
Article
Virology
Kimihito Ito et al.
Summary: The Omicron variant of SARS-CoV-2 has spread rapidly across the globe, with 758 confirmed cases in Denmark. Based on Danish data, the effective reproduction number of Omicron is estimated to be 3.19 times higher than that of the Delta variant. It is expected that by December 28, 2021, over 95% of SARS-CoV-2 infections in Denmark will be caused by the Omicron variant.
JOURNAL OF MEDICAL VIROLOGY
(2022)
Review
Virology
Yusha Araf et al.
Summary: The Omicron variant of SARS-CoV-2 is a heavily mutated virus with a high risk of infection. Limited information is available regarding the genomics, transmissibility, and effectiveness of vaccines against this variant, emphasizing the need for further investigation.
JOURNAL OF MEDICAL VIROLOGY
(2022)
Article
Medicine, General & Internal
Victoria Hall et al.
Summary: This study investigated the duration and effectiveness of immunity among healthcare workers in the United Kingdom. It found that two doses of the BNT162b2 vaccine provided high short-term protection against SARS-CoV-2 infection, but this protection significantly decreased after six months. However, infection-acquired immunity boosted by vaccination remained high, even more than one year after infection.
NEW ENGLAND JOURNAL OF MEDICINE
(2022)
Article
Medicine, General & Internal
Shabir A. Madhi et al.
Summary: The Omicron variant of SARS-CoV-2 spread more rapidly in South Africa, where two thirds of unvaccinated residents were found to have past infections. Omicron peaked just 1 month after being detected, with hospitalizations and deaths not increasing proportionately with the rise in cases. It remains unclear whether this change is due to widespread preexisting immunity or unique features of the virus.
NEW ENGLAND JOURNAL OF MEDICINE
(2022)
Article
Primary Health Care
A. Ruiz-Garcia et al.
Summary: This study analyzed the case-fatality rate (CFR) in different Autonomous Communities (AC) during the second wave of COVID-19 in Spain and its relationship with infection prevalence. The results showed higher CFR in men and elderly people, with significant variations between AC. Further analysis is needed to understand the causes of these differences.
MEDICINA DE FAMILIA-SEMERGEN
(2022)
Article
Infectious Diseases
F. Abdullah et al.
Summary: This study analyzed the clinical data of COVID-19 patients admitted to a hospital in Tshwane during the Omicron wave, and found that the severity of the disease was decreased compared to previous waves, with lower death rates and ICU admissions.
INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES
(2022)
Letter
Public, Environmental & Occupational Health
Ying Liu et al.
JOURNAL OF TRAVEL MEDICINE
(2022)
Letter
Pediatrics
Lindsey Wang et al.
Summary: This cohort study evaluates the incidence rates and clinical outcomes of SARS-CoV-2 infection caused by the Omicron and Delta variants in children younger than 5 years in the United States.
Letter
Medicine, General & Internal
Shirley Collie et al.
NEW ENGLAND JOURNAL OF MEDICINE
(2022)
Editorial Material
Public, Environmental & Occupational Health
Ying Liu et al.
Summary: The Delta variant is rapidly replacing other strains of SARS-CoV-2, with a higher R-0 value of 5.08 compared to the ancestral strain's 2.79. Increasing vaccine coverage and strengthening public health measures are now more urgent than ever to control the spread of the virus.
JOURNAL OF TRAVEL MEDICINE
(2021)
