Feed morbidity-and-mortality-weekly-report-mmwr Morbidity and Mortality Weekly Report (MMWR)

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Updated 2025-10-26 11:32
Multiple Variants of SARS-CoV-2 in a University Outbreak After Spring Break — Chicago, Illinois, March–May 2021
This report describes an influx of COVID-19 cases at Chicago University following spring break 2021.
Evaluation of Syndromic Surveillance Data for Studying Harmful Algal Bloom-Associated Illnesses — United States, 2017–2019
This report describes emergency department visits related to harmful algal bloom exposure.
National, Regional, State, and Selected Local Area Vaccination Coverage Among Adolescents Aged 13–17 Years — United States, 2020
This report describes adolescent vaccination coverage in 2020.
Epidemiologically Linked COVID-19 Outbreaks at a Youth Camp and Men’s Conference — Illinois, June–July 2021
Linked COVID-19 outbreaks at two events: an overnight camp and a men’s conference in Illinois, June–July 2021.
Association Between COVID-19 and Myocarditis Using Hospital-Based Administrative Data — United States, March 2020–January 2021
Viral infections are a common cause of myocarditis. Some studies have indicated an association between COVID-19 and myocarditis.
COVID-19 Vaccination Coverage Among Adolescents Aged 12–17 Years — United States, December 14, 2020–July 31, 2021
COVID-19 vaccination status among adolescents aged 12-17 years in the United States.
Outbreak Associated with SARS-CoV-2 B.1.617.2 (Delta) Variant in an Elementary School — Marin County, California, May–June 2021
COVID-19 outbreak associated with an unvaccinated infected teacher in an elementary school from May–June 2021 in Marin County, California.
COVID-19 Case Rates in Transitional Kindergarten Through Grade 12 Schools and in the Community — Los Angeles County, California, September 2020–March 2021
COVID-19 case rates among students and staff in Los Angeles County transitional kindergarten through grade 12 (TK–12) schools remained low compared with the surrounding community.
Mental Health and Substance Use Among Adults with Disabilities During the COVID-19 Pandemic — United States, February–March 2021
This report describes adverse mental health symptoms or substance use among adults with disabilities during the COVID-19 pandemic.
Trends in Nonfatal and Fatal Overdoses Involving Benzodiazepines — 38 States and the District of Columbia, 2019–2020
This report describes trends in overdoses involving benzodiazepines during 2019–2020.
Notes from the Field: Illicit Benzodiazepines Detected in Patients Evaluated in Emergency Departments for Suspected Opioid Overdose - Four States, October 6, 2020-March 9, 2021
This report describes detection of illicit benzodiazepines in patients in emergency departments.
Erratum: Vol. 70, No. 21
MMWR erratum volume 70, number 21.
QuickStats: Percentage of Children and Adolescents Aged 0-17 Years Who Have Experienced a Specified Stressful Life Event, by Type of Event and Poverty Status - National Health Interview Survey, United
This report describes the percentage of children and adolescents aged 0-17 years who have experienced a stressful life event.
Erratum: Vol. 70, No. 32
MMWR erratum volume 70, number 32.
Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance - Eight U.S. Locations, December 2020-August 2021
For frontline workers, COVID-19 mRNA vaccines, Pfizer-BioNTech and Moderna, are effective against viral infection, but less effective during Delta variant spread.
SARS-CoV-2 Infections and Hospitalizations Among Persons Aged ≥16 Years, by Vaccination Status - Los Angeles County, California, May 1-July 25, 2021
COVID-19 vaccine effectiveness, reinfection, and hospitalization in fully, partially, and unvaccinated people during the Delta variant in Los Angeles County, California.
New COVID-19 Cases and Hospitalizations Among Adults, by Vaccination Status - New York, May 3-July 25, 2021
COVID-19 vaccine effectiveness against hospitalizations was stable, but it declined against new infections among adults in New York during May-July 2021.
Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults - United States, March-July 2021
COVID-19 vaccine effectiveness against hospitalizations was stable for people who received 2 doses, and vaccines remained effective among people with risk for severe COVID-19.
QuickStats: Age-Adjusted Percentage of Adults Aged ≥65 Years Who Have a Lot of Difficulty Hearing or Cannot Hear at All Even When Using Hearing Aids, by Urbanization Level - National Health Intervi
This report describes the percentage of adults aged ≥65 years who have difficulty hearing or who can't hear even when using hearing aids.
Protracted, Intermittent Outbreak of Salmonella Mbandaka Linked to a Restaurant - Michigan, 2008-2019
This report describes an outbreak of Salmonella Mbandaka at a restaurant in Michigan.
Disparities in Excess Mortality Associated with COVID-19 - United States, 2020
This report describes excess mortality rates associated with COVID-19 among older people and certain racial/ethnic minority groups.
Use of Rapid Antigen Testing for SARS-CoV-2 in Remote Communities - Yukon-Kuskokwim Delta Region, Alaska, September 15, 2020-March 1, 2021
This report describes the use of COVID-19 rapid antigen testing in remote Alaskan communities.
Notes from the Field: Vitamin D-Deficient Rickets and Severe Hypocalcemia in Infants Fed Homemade Alkaline Diet Formula - Three States, August 2020-February 2021
This report describes vitamin D deficiency and hypocalcemia in infants fed homemade formula.
Erratum: Vol. 70, No. 30
MMWR erratum volume 70, number 30.
Erratum: Vol. 70, No. 27
MMWR erratum volume 70, number 27.
Effectiveness of Pfizer-BioNTech and Moderna Vaccines in Preventing SARS-CoV-2 Infection Among Nursing Home Residents Before and During Widespread Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Varia
COVID-19 mRNA vaccines, Pfizer-BioNTech and Moderna, are effective against infection among nursing home residents, but effectiveness declined in recent months.
QuickStats: Percentage of Adults Aged ≥18 Years Who Daily Experienced Feelings of Anxiety (Feeling Worried, Nervous, or Anxious) or Depression, or Both, by Sex - National Health Interview Survey, U
This report describes the percentage of adults who had feelings of anxiety and/or depression in 2019.
West Nile Virus and Other Domestic Nationally Notifiable Arboviral Diseases - United States, 2019
This report describes a decrease in incidence of West Nile virus neuroinvasive disease during 2019.
Notes from the Field: Recurrence of a Multistate Outbreak of Salmonella Typhimurium Infections Linked to Contact with Hedgehogs - United States and Canada, 2020
This report describes a Salmonella outbreak in the United States and Canada linked to pet hedgehogs.
Alternative Methods for Grouping Race and Ethnicity to Monitor COVID-19 Outcomes and Vaccination Coverage
This report describes methods for grouping race and ethnicity data to monitor COVID-19 outcomes and vaccination coverage.
Erratum: Vol. 70, No. 29
MMWR erratum volume 70, number 29.
Rapid Increase in Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant - Mesa County, Colorado, April-June 2021
This report describes an increase in Delta variant cases of COVID-19 in Mesa County, Colorado.
Effectiveness of COVID-19 Vaccines in Preventing Hospitalization Among Adults Aged ≥65 Years, - COVID-NET, 13 States, February-April 2021
This report describes COVID-19 vaccine effectiveness in adults aged 65 years and older.
Reduced Risk of Reinfection with SARS-CoV-2 After COVID-19 Vaccination - Kentucky, May-June 2021
This report describes a case of septicemic plague in Navajo County, Arizona.
Early Release: Use of COVID-19 Vaccines After Reports of Adverse Events Among Adult Recipients of Janssen (Johnson & Johnson) and mRNA COVID-19 Vaccines (Pfizer-BioNTech and Moderna): Update from
ACIP reviewed information on COVID-19 vaccines and concluded that benefits of vaccination outweigh the risks of rare, serious adverse events.
Early Release: Use of COVID-19 Vaccines After Reports of Adverse Events Among Adult Recipients of Janssen (Johnson & Johnson) and mRNA COVID-19 Vaccines (Pfizer-BioNTech and Moderna): Update from
ACIP reviewed information on COVID-19 vaccines and concluded that benefits of vaccination outweigh the risks of rare, serious adverse events.
Early Release: Effectiveness of COVID-19 Vaccines in Preventing Hospitalization Among Adults Aged ≥65 Years, — COVID-NET, 13 States, February–April 2021
This report describes COVID-19 vaccine effectiveness in adults aged 65 years and older.
Early Release: Rapid Increase in Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant — Mesa County, Colorado, April–June 2021
This report describes an increase in Delta variant cases of COVID-19 in Mesa County, Colorado.
Early Release: Reduced Risk of Reinfection with SARS-CoV-2 After COVID-19 Vaccination — Kentucky, May–June 2021
This report describes a case of septicemic plague in Navajo County, Arizona.
QuickStats: Injury Deaths as a Percentage of Total Deaths, by Age Group - National Vital Statistics System, United States, 2019
This report describes U.S. injury deaths as a percentage of total deaths by age group.
Erratum: Vol. 70, No. 15
MMWR erratum volume 70, number 15.
Notes from the Field: Delays in Identification and Treatment of a Case of Septicemic Plague - Navajo County, Arizona, 2020
This report describes a case of septicemic plague in Navajo County, Arizona.
COVID-19 Vaccine Safety in Adolescents Aged 12-17 Years - United States, December 14, 2020-July 16, 2021
This report describes COVID-19 vaccine safety among U.S. adolescents aged 12-17 years.
Outbreak of SARS-CoV-2 Infections, Including COVID-19 Vaccine Breakthrough Infections, Associated with Large Public Gatherings - Barnstable County, Massachusetts, July 2021
This report describes COVID-19 outbreaks associated with large public gatherings in Massachusetts.
QuickStats: Percentage of Adults Aged ≥18 Years With Fair or Poor Health, by Urbanization Level and Age Group — National Health Interview Survey, United States, 2019
This report describes the percentage of U.S. adults with fair or poor health by urbanization level and age group.
Disparities in COVID-19 Vaccination Coverage Among Health Care Personnel Working in Long-Term Care Facilities, by Job Category, National Healthcare Safety Network — United States, March 2021
This report describes disparities in COVID-19 vaccination coverage among health care personnel in long-term care facilities.
Progress Toward Hepatitis B Control — World Health Organization European Region, 2016–2019
This report describes progress toward hepatitis B control in the World Health Organization European Region.
Progress Toward Hepatitis B Control - World Health Organization European Region, 2016-2019
This report describes progress toward hepatitis B control in the World Health Organization European Region.
Disparities in COVID-19 Vaccination Coverage Among Health Care Personnel Working in Long-Term Care Facilities, by Job Category, National Healthcare Safety Network - United States, March 2021
This report describes disparities in COVID-19 vaccination coverage among health care personnel in long-term care facilities.
QuickStats: Percentage of Adults Aged ≥18 Years With Fair or Poor Health, by Urbanization Level and Age Group - National Health Interview Survey, United States, 2019
This report describes the percentage of U.S. adults with fair or poor health by urbanization level and age group.
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