Morbidity & Mortality Weekly Report (MMWR)

 
 

  • Identification of the SARS-CoV-2 Variants B.1.427 and B.1.429 This report summarizes what we currently know about two additional variants of SARS-CoV-2; B.1.427 and B.1.429, first described in Southern California.
  • Emergence and Epidemiology of the SARS-CoV-2 B.1.526 Variant This report details the characteristics of the SARS-CoV-2 variant B.1.526, first identified in New York City. Does it lead to more severe disease or increased risk for breakthrough infection?
  • Anxiety-Related Adverse Events After Janssen COVID-19 Vaccine Syncope and other anxiety-related events occur more often after receipt of Janssen COVID-19 vaccination compared to the influenza vaccination, according to this CDC report.
  • Safety Monitoring of the Janssen COVID-19 Vaccine This report summarizes the data reported to V-safe surveillance system and the Vaccine Adverse Events Reporting System regarding the Janssen COVID-19 vaccine.
  • Effectiveness of mRNA COVID-19 Vaccines Among Older Adults This real-world evaluation demonstrated that vaccination with the Pfizer-BioNTech or Moderna vaccines provided protection against COVID-19-associated hospitalization among adults 65 and older.
  • Updated Recommendations for Use of the Janssen COVID-19 Vaccine ACIP has reaffirmed its interim recommendation for use of the Janssen COVID-19 vaccine, with an included warning that rare clotting events might occur after vaccination among women aged 18-49 years.
  • Postvaccination SARS-CoV-2 Infections in SNFs This report of breakthrough COVID-19 infections in vaccinated residents and staff of skilled nursing facilities revealed most were asymptomatic, and no secondary transmission occurred.
  • Linked Clusters of SARS-CoV-2 Variant B.1.351 This report documents the first linked clusters in the United States of infections due to the South African SARS-CoV-2 variant B.1.351 with no identified link to international travel.
  • Emergency Department Visits for Tick Bites This report reveals high numbers of visits to the emergency department for tick bite, particularly during the late spring and early summer months and in the Northeastern states.
  • Multistate Outbreak of E. coli Infections Linked to Raw Flour This outbreak of E. coli across nine states underscores the need to be cognizant of raw flour as an important cause of Shiga toxin-producing Escherichia coli infection.
  • SARS-CoV-2 Exposure Reduced Through Distanced Aircraft Seating Laboratory modeling of exposure to SARS-CoV-2 on aircraft demonstrated that scenarios in which the middle seat was left vacant resulted in significantly reduced exposure.
  • Airport Traveler Testing Program for SARS-CoV-2 This report indicates that Alaska's testing and quarantine requirements for air travelers, started in June 2020, was successful in limiting the importation of travel-associated SARS-CoV-2 infections.
  • Update on Excess Deaths Associated With the COVID-19 Pandemic The latest data from the National Vital Statistics System reveals that 545,600-660,200 excess deaths occurred in the United States during the first year of the COVID-19 pandemic.
  • Regional Trends in Disparities in COVID-19 Hospitalizations This CDC report identified geographic differences in racial and ethnic disparities in COVID-19 hospitalization levels during 2020. Did trends vary over the course of the pandemic?
  • COVID-19 Pandemic-Associated Changes in ED Visits In the first months of the COVID-19 pandemic, emergency department visits sharply declined. Have they since returned to pre-pandemic levels?
  • Worldwide Progress in Immunization Safety Monitoring While progress has been made, this report reveals that global vaccine safety monitoring remains uncoordinated, and much work is still needed to address barriers and improve sharing of data.
  • SARS-CoV-2 Transmission Associated With a Bar Opening Event Forty-six cases of COVID-19 were linked to an indoor bar opening event, demonstrating that SARS-CoV-2 transmission originating in a business such as a bar may impact an entire community.
  • Death Certificate-Based Diagnosis Codes for COVID-19 Mortality The findings in this report, which assessed 378,048 death certificates from 2020 listing COVID-19, support the accuracy of COVID-19 mortality surveillance in the U.S.
  • Provisional Mortality Data--United States, 2020 This provisional CDC report shows that in 2020, the age-adjusted death rate jumped nearly 16% compared with 2019, with COVID-19 as the third leading underlying cause of death.
  • Interim Estimates of Effectiveness of mRNA COVID-19 Vaccines The latest data demonstrates that under real-world conditions, mRNA vaccine effectiveness was 90% against SARS-CoV-2 infections after full immunization and 80% after partial immunization.