Morbidity and Mortality Weekly Report (MMWR)

In U.S. hospitals during January-March 2021, receipt of Pfizer-BioNTech or Moderna COVID-19 vaccines was 94% effective against COVID-19 hospitalization among fully vaccinated adults and 64% effective among partially vaccinated adults aged ≥65 years.

This report describes healthcare use among adolescents with autism.

This report describes emergency department visits attributed to tick bites.

This report describes a COVID-19 outbreak among farmworkers in Okanogan County.

This report describes a review of COVID-19 cases in the seafood processing industry in Alaska.

This report describes the percentage of adults with arthritis by age group and sex in the United States.

This report describes an investigation in Maryland of two linked clusters of COVID-19 cases identified as the B.1.351 variant.

Erratum: Vol. 70, No. 12

The Advisory Committee on Immunization Practices concluded that the benefits of resuming Janssen COVID-19 vaccination among persons aged ≥18 years outweighed the risks and reaffirmed its interim recommendation under FDA's Emergency Use Authorization, which includes a new warning for rare clotting events among women aged 18-49 years.

Among 3,171 nonhospitalized adult COVID-19 patients, 69% had one or more outpatient visits 28-180 days after the diagnosis. Two thirds had a visit for a new primary diagnosis, and approximately one third had a new specialist visit. Symptoms potentially related to COVID-19 were common new visit diagnoses. Visits for these symptoms decreased after 60 days but for some patients continued through 120-180 days.

Twenty-two possible breakthrough SARS-CoV-2 infections occurred among fully vaccinated persons ≥14 days after their second dose of COVID-19 vaccine. Two thirds of persons were asymptomatic. A minority of persons with breakthrough infection experienced mild to moderate COVID-19-like symptoms; two COVID-19-related hospitalizations and one death occurred. No facility-associated secondary transmission was identified.

In a COVID-19 outbreak at a Kentucky skilled nursing facility involving a newly introduced variant to the region, unvaccinated residents and health care personnel (HCP) had 3.0 and 4.1 times the risk of infection as did vaccinated residents and HCP. Vaccine was 86.5% protective against symptomatic illness among residents and 87.1% protective among HCP.

This report describes age-adjusted death rates for Alzheimer Disease among adults ≥65 Years by sex.

This report describes an outbreak of Shiga toxin-producing E. Coli linked to contaminated flour in the United States.

This report describes COVID-19 outbreaks among incarcerated persons in Idaho correctional facilities.

This report describes passenger arrival testing for SARS-CoV-2 in Alaska airports.

This report describes workers' compensation claims for work-related musculoskeletal disorders among construction workers in the United States.

Based on laboratory scenarios, COVID-19 exposures were reduced by 23% to 57% in single-aisle and twin-aisle aircraft when the middle seat was kept vacant, compared with full aircraft occupancy.

This report describes changes in the number of emergency department visits during December 2020-January 2021 compared with the same months the year before.

This report describes immunization safety monitoring using surveillance for adverse events following immunization.

This report describes state-level costs of opioid use disorder and fatal opioid overdose in the United States for 2017.

Erratum: Vol. 70, No. 13

MMWR erratum volume 70, number 13

This report provides an update on excess deaths in the United States associated with the COVID-19 pandemic.

Within each U.S. Census region, the proportion of hospitalized patients with COVID-19 was highest for Hispanic or Latino patients. Racial and ethnic disparities were largest during May-July 2020 and became less pronounced as the pandemic spread throughout the country; however, disparities remained in December 2020 in all regions.

Investigators analyzed data on in-school COVID-19 testing among 594 students who were exposed to 33 index patients at 13 elementary schools. Compared with non-Hispanic White students, participation in the program was higher among students identifying as Hispanic/Latino White or members of another racial minority group.

Based on laboratory scenarios, COVID-19 exposures were reduced by 23% to 57% in single-aisle and twin-aisle aircraft when the middle seat was kept vacant, compared with full aircraft occupancy.

Within each U.S. Census region, the proportion of hospitalized patients with COVID-19 was highest for Hispanic or Latino patients. Racial and ethnic disparities were largest during May-July 2020 and became less pronounced as the pandemic spread throughout the country; however, disparities remained in December 2020 in all regions.

Data from 13 states indicate that compared with White persons, Hispanic and American Indian or Alaska Native persons experienced 1.7 times the rate, and Black persons experienced 1.4 times the rate of emergency department care visits for COVID-19 during October-December 2020.

This report describes COVID-19 incidence and mortality rates among American Indian/Alaska Native and White persons in Montana.

This report describes use of stay-at-home orders and mask mandates by the Blackfeet Tribal Reservation as a mitigation effort to reduce COVID-19.

This report describes the age-adjusted percentage of adults who received an influenza vaccination in the U.S. in 2019.

This report describes COVID-19 testing protocols at colleges and universities in relation to class instruction type.

This report describes COVID-19 contact tracing and case investigation efforts on the Spirit Lake reservation in South Dakota.

Forty-six cases of COVID-19 were linked to an indoor bar opening event that occurred during February 2021 in a rural Illinois county. Event patrons were linked to secondary cases among household, long-term care facility, and school contacts.

Among 378,048 death certificates from 2020 listing COVID-19 as a cause of death, 5.5% listed COVID-19 without codes for any other conditions. Among 357,133 death certificates with at least one other diagnosis, 97% had a co-occurring diagnosis of a plausible chain-of-event condition, a significant contributing condition, or both.

The age-adjusted death rate increased by 15.9% in 2020. Overall death rates were highest among Black and American Indian or Alaska Native people. COVID-19 was the third leading cause of death, and the COVID-19 death rate was highest among Hispanics.

This report describes an outbreak of COVID-19 in a correctional facility after incarcerated persons were exposed by a visiting dental health care provider.

This report describes the willingness among incarcerated persons to receive a COVID-19 vaccination.

This report describes an outbreak of COVID-19 in a correctional facility after exposure from newly transferred incarcerated persons.

This report describes adults in the United States with fair or poor health based on home ownership status.

MMWR erratum volume 70, number 3.

MMWR erratum volume 70, number 12.

mRNA COVID-19 vaccine effectiveness against SARS-CoV-2 infection was 90% for full immunization (≥14 days after second dose) and 80% for partial immunization (≥14 days after first dose but before second dose) in real-world conditions.

From August 2020-February 2021, adults with recent symptoms of an anxiety or depressive disorder increased from 36% to 42%. Increases were largest among adults 18-29 years and those with less than a high school education.

This report describes a population-based analysis of COVID-19 incidence among counties with relatively large percentages of persons belonging to five racial and ethnic minority groups.

This report describes current progress toward achieving global targets for reducing tuberculosis incidence.

This report describes a program that increased the number of persons with HIV infections who initiated antiretroviral therapy before and during the COVID-19 pandemic.

This report describes declines in HPV vaccine-type infection prevalence among females when compared with prevalence before vaccination.

This report describes changes in tuberculosis incidence in the United States.