Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
UPDATE
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
UPDATE
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
UPDATE
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

It’s Time for a Boost

It’s Time for a Boost
Subscribe to the Weekly Review

Interpretive Summary for May 20, 2022

It’s Time for a Boost

a bandaged shoulder, and a sticker reading "booster"

For the week ending May 20, 2022, cases and hospitalizations continued to rise as the United States marked one million deaths from COVID-19. While about 54% of the U.S. population is experiencing low COVID-19 Community Levels, many areas have moved into medium and high levels. COVID-19 Community Levels can help communities and individuals make decisions based on their local context and their unique needs.

COVID-19 vaccination remains the best option to lower your risk of severe illness, hospitalization, and death if you get infected. Many people have started vaccination, but most have not stayed up to date. About 78% of people in the United States have received at least one dose of a COVID-19 vaccine, and 66.5% are fully vaccinated. Of those who are fully vaccinated, 46.4% have received a booster and are considered up to date. Everyone ages 5 years and older is eligible to receive one booster after receiving their COVID-19 vaccine primary series. Some people are eligible to receive a second booster.

People who are up to date on vaccines have much lower risk of serious illness and death from COVID-19 compared with people who are unvaccinated. CDC’s COVID Data Tracker shows that in March 2022, adults ages 18 years and older who were unvaccinated were about 5 times more likely to be hospitalized with COVID-19 than those who were up to date. In the same month, people ages 12 years and older and unvaccinated were 17 times more likely to die of COVID-19 than those who were up to date.

COVID-19 vaccines available in the United States are effective at protecting people from getting seriously ill, being hospitalized, and even dying—especially people who are boosted. As with other diseases, you are protected best from COVID-19 when you stay up to date with recommended vaccines. Find a vaccine provider near you.

Note to Readers: CDC will not publish the COVID Data Tracker Weekly Review on Friday, May 27, 2022. The Weekly Review will resume publication on Friday, June 3, 2022. To find all the latest COVID-19 data, visit COVID Data Tracker.

What's New

COVID-19 Community Levels

As of May 19, 2022, there are 301 (9.35%) counties, districts, or territories with a high COVID-19 Community Level, 477 (14.81%) counties with a medium Community Level, and 2,442 (75.84%) counties with a low Community Level. This represents a moderate (+5.10 percentage points) increase in the number of high-level counties, a slight (−0.74 percentage points) decrease in the number of medium-level counties, and a corresponding (−5.84 percentage points) decrease in the number of low-level counties. Five (9.62%) of 52 jurisdictions had no high- or medium-level counties this week.

To check your COVID-19 Community Level, visit COVID Data Tracker.

U.S. COVID-19 Community Levels by County

U.S. COVID-19 Community Levels by County 05-20-2022  legend for map: green = low yellow = medium orange = high grey = no data green is low, yellow is medium, orange is high, grey is no data

Reported Cases

As of May 18, 2022, the current 7-day moving average of daily new cases (101,130) increased by 18.8% compared with the previous 7-day moving average (85,143). A total of 82,820,565 COVID-19 cases have been reported in the United States as of May 18, 2022.

CDC Nowcast projections* for the week ending May 14, 2022, estimate the combined national proportion of lineages designated as Omicron to be 100%. There are several lineages of Omicron (B.1.1.529, BA.1, BA.2, BA.3, BA.4, and BA.5), and within each are multiple sublineages. COVID Data Tracker shows the proportions of Omicron lineages grouped as follows: the B.1.1.529 lineage (includes BA.1, BA.3, BA.4 and BA.5), the BA.1.1** lineage, the BA.2 lineage, and the BA.2.12.1 lineage. The predominant Omicron lineage in the United States is BA.2. The national proportion of BA.2 is projected to be 50.9% (95% PI 44.9-56.9%). The national proportion of BA.2.12.1 is projected to be 47.5% (95% PI 41.5-53.5%). B.1.1.529 (BA.1, BA.3, BA.4 and BA.5) is projected to be 1.2% (95% PI 0.6-2.2%), and BA.1.1 is projected to be 0.3% (95% PI 0.2-0.4%). Omicron is predicted to be 100% in all HHS regions.

82,820,565
Total Cases Reported

82,820,565
Total Cases Reported

101,130
Current 7-Day Average***

101,130
Current 7-Day Average***

85,143
Prior 7-Day Average

85,143
Prior 7-Day Average

18.8%
Change in 7-Day Average since Prior Week 

18.8%
Change in 7-Day Average since Prior Week 

**The median time from specimen collection to sequence data reporting is about 3 weeks. As a result, weighted estimates for the most recent few weeks may be unstable or unavailable. CDC’s Nowcast is a data projection tool that helps fill this gap by generating timely estimates of variant proportions for variants that are circulating in the United States. View Nowcast estimates on CDC’s COVID Data Tracker website on the Variant Proportions page.

**For national data, the proportion of BA.1.1 is shown separately. For regional data, the proportion of BA.1.1 is also aggregated with B.1.1.529.

***Historical cases are excluded from daily new cases and 7-day average calculations until they are incorporated into the dataset for the applicable date. Of 533,665 historical cases reported retroactively, 10,795 were reported in the current week and 5 were reported in the prior week.

Daily Trends in COVID-19 Cases in the United States Reported to CDC

red line

7-Day moving average

Chart showing Daily Trends in COVID-19 Cases in the United States Reported to CDCs 05-20-2022

Vaccinations

The U.S. COVID-19 Vaccination Program began December 14, 2020. As of May 18, 2022, 582.8 million vaccine doses have been administered in the United States. Overall, about 258.0 million people, or 77.7% of the total U.S. population, have received at least one dose of vaccine. About 220.7 million people, or 66.5% of the total U.S. population, have been fully vaccinated.* Of those fully vaccinated, about 102.4 million people have received a booster dose,** but 49.1% of the total booster-eligible population has not yet received a booster dose. As of May 18, 2022, the 7-day average number of administered vaccine doses reported (by date of CDC report) to CDC per day was 388,308, a 0.5% decrease from the previous week.

CDC’s COVID Data Tracker displays vaccination trends by age group, race/ethnicity, and urban/rural status. To see trends by age group and race/ethnicity, visit the Vaccination Demographic Trends tab. To see trends by urban/rural status, visit  the COVID-19 Vaccination Equity tab.

582,757,136
Vaccine Doses Administered

582,757,136 Vaccine Doses Administered

582,757,136
Vaccine Doses Administered

258,008,907
People who received at least one dose

582,757,136 Vaccine Doses Administered

258,008,907
People who received at least one dose

220,739,345
People who are fully vaccinated*

220,739,345
People who are fully vaccinated*

77.7%
Percentage of the U.S. population that has received at least one dose

582,757,136 Vaccine Doses Administered

77.7%
Percentage of the U.S. population that has received at least one dose

66.5%
Percentage of the U.S. population that has been fully vaccinated*

66.5%
Percentage of the U.S. population that has been fully vaccinated*

-0.1
Percentage point increase from last week

582,757,136 Vaccine Doses Administered

-0.1
Percentage point increase from last week

+0.2
Percentage point increase from last week

+0.2
Percentage point increase from last week

*Represents the number of people who have received the second dose in a two-dose COVID-19 vaccine series (such as the Pfizer-BioNTech or Moderna vaccines) or one dose of the single-shot Johnson & Johnson’s Janssen vaccine.

**Represents the number of people who are fully vaccinated and have received another dose of COVID-19 vaccine since August 13, 2021. This includes people who received their first additional dose or booster.

Daily Change in the Total Number of Administered COVID-19 Vaccine Doses Reported to CDC by the Date of CDC Report, United States

red line

7-Day moving average

Daily Change in the Total Number of Administered COVID-19 Vaccine Doses Reported to CDC by the Date of CDC Report, United States 05-20-2022

Hospitalizations

New Hospital Admissions

The current 7-day daily average for May 11–17, 2022, was 3,250. This is a 24.2% increase from the prior 7-day average (2,617) from May 4–10, 2022.

4,693,725
Total New Admissions

4,693,725
Total New Admissions

3,250
Current 7-Day Average

3,250
Current 7-Day Average

2,617
Prior 7-Day Average

2,617
Prior 7-Day Average

+24.2%
Change in 7-Day Average

+24.2%
Change in 7-Day Average

The start of consistent reporting of hospital admissions data was August 1, 2020.

Daily Trends in Number of New COVID-19 Hospital Admissions in the United States

Daily Trends in Number of New COVID-19 Hospital Admissions in the United States 05-13-2022

New admissions are pulled from a 10 am EDT snapshot of the HHS Unified Hospital Data – Analytic Dataset. Due to potential reporting delays, data from the most recent 7 days, as noted in the figure above with the grey bar, should be interpreted with caution. Small shifts in historic data may also occur due to changes in the Centers for Medicare & Medicaid Services (CMS) Provider of Services file, which is used to identify the cohort of included hospitals.

COVID-NET: Hospitalization Rates among Certain Racial and Ethnic Groups

CDC’s Coronavirus Disease 2019-Associated Hospitalization Surveillance Network (COVID-NET) shows that overall rates of COVID-19-associated hospitalizations have increased more sharply within certain racial and ethnic groups. The largest increase was seen among non-Hispanic White persons when rates increased from 2.3 per 100,000 population for week ending April 2 to 5.3 per 100,000 population for the week ending May 7, 2022. Rates among non-Hispanic Black persons also increased, from 2.3 per 100,000 population on April 2 to 4.2 per 100,000 population on May 7. Additionally, rates among non-Hispanic Asian and Pacific Islander persons have increased from 1.0 per 100,000 population on April 2 to 2.1 per 100,000 population on May 7.

Rates of COVID-19-Associated Hospitalizations among non-Hispanic White, Black, and Asian/Pacific Islander Persons

COVID-NET: Hospitalization Rates among Adults Ages 65 Years and Older

The Coronavirus Disease 2019 (COVID-19)-Associate­­d Hospitalization Surveillance Network (COVID-NET) is an additional source for hospitalization data collected through a network of more than 250 acute-care hospitals in 14 states (representing ~10% of the U.S. population). Detailed data on patient demographics, including race/ethnicity, underlying medical conditions, medical interventions, and clinical outcomes, are collected using a standardized case reporting form.

Deaths

The current 7-day moving average of new deaths (280) has decreased 1.2% compared with the previous 7-day moving average (284). As of May 18, 2022, a total of 998,512 COVID-19 deaths have been reported in the United States.

998,512
Total Deaths Reported

998,512
Total Deaths Reported

280
Current 7-Day Average*

280
Current 7-Day Average*

284
Prior 7-Day Average

284
Prior 7-Day Average

-1.2%
Change in 7-Day Average Since Prior Week

-1.2%
Change in 7-Day Average Since Prior Week

*Historical deaths are excluded from the daily new deaths and 7-day average calculations until they are incorporated into the dataset by their applicable date. Of 21,418 historical deaths reported retroactively, 0 were reported in the current week; and 0 were reported in the prior week.

Daily Trends in Number of COVID-19 Deaths in the United States Reported to CDC

red line

7-Day moving average

Daily Trends in Number of COVID-19 Deaths in the United States Reported to CDC 05-20-2022 More Death Data

Testing

The percentage of COVID-19 NAATs (nucleic acid amplification tests)* that are positive (percent positivity) is increasing in comparison to the previous week. The 7-day average of percent positivity from NAATs is now 10.6%. The 7-day average number of tests reported for May 6-May 12, 2022, was 798,164, up 0.9% from 791,248 for the prior 7 days.

882,620,173
Total Tests Reported

882,620,173 Total Tests Reported

882,620,173
Total Tests Reported

798,164
7-Day Average Tests Reported

882,620,173 Total Tests Reported

798,164
7-Day Average Tests Reported

10.6%
7-Day Average % Positivity

10.6%
7-Day Average % Positivity

8.6%
Previous 7-Day Average % Positivity

882,620,173 Total Tests Reported

8.6%
Previous 7-Day Average % Positivity

+2.01
Percentage point change in 7-Day Average % Positivity since Prior Week

+2.01
Percentage point change in 7-Day Average % Positivity since Prior Week

*Test for SARS-CoV-2, the virus that causes COVID-19

COVID-19 NAAT Laboratory Test 7-day Percent Positivity by State/Territory

COVID-19 NAAT Laboratory Test 7-day Percent Positivity by State/Territory 05-20-2022

Wastewater Surveillance

COVID Data Tracker’s Wastewater Surveillance tab tracks levels, changes, and detections of SARS-CoV-2* viral RNA in wastewater at nearly 900 testing sites across the country.

Currently, most of the country is reporting moderate SARS-CoV-2 levels in wastewater. Around 27% of sites are currently seeing some of the highest levels for those sites since December 1, 2021. More than half of all sites reporting wastewater data are experiencing a modest increase in SARS-CoV-2 levels, but about a quarter of sites are reporting a decrease in SARS-CoV-2 levels in wastewater. It’s important to note that even a small increase when levels are low can appear like a dramatic increase in the percent change. For more information on how to use wastewater data, visit CDC’s website.

*The virus that causes COVID-19

SARS-CoV-2 Levels in Wastewater by Site

map of SARS-CoV-2 Levels in Wastewater by Site 05-13-2022

0% means levels are the lowest they have been at the site; 100% means levels are the highest they have been at the site.

More Wastewater Data