Get Boosted: DPH Urges Delawareans to Reinforce Vaccine Protection Against COVID-19

DOVER, DE (February 11, 2022) – The Delaware Division of Public Health (DPH) is providing an update on the most recent statistics related to coronavirus disease 2019 (COVID-19) in Delaware, as of Thursday, Feb 10, 2022. Over the past month, the state has seen a significant decrease in the average percentage of tests that are positive, declining from 32% on Jan. 11, 2022, to 10% on Feb. 10, 2022. The declining trends present a bright spot for the pandemic, however, DPH continues to reinforce the importance of infection prevention and vaccination, particularly the role of boosters in providing increased protection against COVID-19. 

Between Jan. 31 and Feb. 6, 2022, 82% of people who tested positive for COVID-19 in Delaware had not received a booster. The same was true for 81% of hospitalized patients with COVID-19. A Centers for Disease Control and Prevention (CDC) study from April to December of 2021 showed people who were not vaccinated had five times higher risk of getting COVID-19 than adults who had been fully vaccinated and received a booster. Another CDC study showed getting a booster reduces the chance of needing to go the emergency room or being hospitalized by 94%, compared with being unvaccinated. 

“We know that getting vaccinated and boosted is key to reducing the chance of getting sick,” said DPH Director Dr. Karyl Rattay. She adds “Boosters are effective and extremely important for preventing infections but, more importantly, hospitalizations and deaths. Unfortunately, we surpassed 2600 COVID-19 related deaths this week. We have lost more than 400 Delawareans since Thanksgiving, most who were not up to date with their vaccines.” Booster vaccinations are available at any locations that offer the initial COVID-19 vaccine series. 

COVID-19 Cases and Hospitalizations: 

  • Total positive cases since March 11, 2020: 253,010
  • 7-day average of new positive cases: 378.7, a decrease of 228 from last week.
  • 7-day average for the percentage of total positive tests: 10.2%, a decrease of 5.3 percentage points from last week
  • Hospitalizations: 202, a decrease of 120 from last week; critically ill: 21, a decrease of 15 from last week
  • Total COVID-19 deaths: 2,601
  • Total COVID-19 deaths reported since last week: 38, including 12 from a review of vital statistics records.

COVID-19 Vaccinations:  

  • Total number of doses administered in Delaware: 1,669,853
  • Percentage of Delawareans 5+ who are fully vaccinated (CDC data): 70.8%
  • Percentage of Delawareans 12+ who are fully vaccinated (CDC data): 75.4%
  • Percentage of Delawareans 18+ who are fully vaccinated (CDC data): 76.9%
  • Percent of Delawareans who are fully vaccinated (CDC data): 66.8%

All qualifying Delawareans should get vaccinated. Individuals who qualify for a booster dose should get one as soon as possible. For the latest information on the COVID-19 vaccine in Delaware, visit For information on boosters, visit Delaware’s latest COVID-19 vaccination statistics can be found under the Vaccine Tracker dashboard at 

COVID-19 Case Vaccination Status Report:   

The following reports capture a weekly breakdown of vaccination status for cases, deaths, and hospitalizations for the time frame for Jan. 31 – Feb. 6. 

Weekly Overview(1/31/22 – 2/6/22) 

Unvaccinated Cases 

Total Unvaccinated / Partially Vaccinated Cases 


Total Cases 


Percent of Unvaccinated / Partially Vaccinated Cases 



Unvaccinated / Partially Vaccinated Hospitalized  Cases 


Total Hospitalized Cases 


Percent of Unvaccinated / Partially Vaccinated Hospitalized  Cases 



Unvaccinated / Partially Vaccinated COVID-19 Deaths 


Total COVID-19 Deaths 


Percent of Unvaccinated / Partially Vaccinated COVID-19 Deaths 


Weekly Overview(1/31/22 – 2/6/22) 

Non-boosted Cases 

Total Non-boosted Cases 


Total Cases 


Percent of Non-boosted Cases 


Non-boosted Hospitalized Cases 

Total Non-boosted Hospitalized Cases 


Total Hospitalized Cases 


Percent of Non-boosted Cases 


Non-boosted Deaths 

Total Non-boosted Deaths 


Total COVID-19 Deaths 


Percent of Non-boosted Cases 


Breakthrough Cases (cumulative since vaccinations began): 

  • Total breakthrough cases: 21,004, or 3.56% of fully vaccinated individuals
  • Total breakthrough hospitalizations: 240
  • Total breakthrough deaths: 230

A breakthrough case is defined as testing positive for COVID-19 after an individual has been fully vaccinated for two weeks or more.  

*Please note, these data may be updated as additional information is received. 

COVID-19 Variant Cases in Delaware:   

The Division of Public Health this week launched a COVID-19 variant chart on its My Healthy Community COVID-19 data dashboard. The data show the weekly proportion of sequenced cases identified as Delta or Omicron over time. Because this data is now easily accessible through the data dashboard, DPH will discontinue this section of the weekly update going forward. The public is encouraged to visit [] for the latest variant data for Delaware.   

Long-term Care Statistics:  

As of Thursday, Feb 10, there have been a total of 3,052 positive COVID-19 cases involving long-term care residents, and 897 residents of Delaware long-term care facilities have died from complications related to COVID-19.  

Flu Update: 

There were 10 laboratory-confirmed cases reported the week of Jan. 30 – Feb. 5. As of Feb. 5, 2022, the most recent date for which flu statistics are available, there have been 626 laboratory-confirmed cases for the current season. The cases involved 432 individuals from New Castle County, 84 from Kent County and 110 from Sussex County. This number reflects only the number of lab-confirmed cases; the actual number of cases circulating statewide is likely higher as not all people with the flu seek treatment, and many cases are diagnosed through rapid test kits in a provider’s office versus a lab. 

All individuals 6 months and older are strongly encouraged to get vaccinated against the flu if they haven’t already. Flu vaccines are available at pharmacies (including those in grocery stores), participating medical provider offices, Federally Qualified Health Centers (for their patients), as well as Division of Public Health clinics. DPH is also advising the public that the flu vaccine can be administered at the same time as the COVID-19 vaccine. 

For the latest information on the flu in Delaware, visit 


Individuals with general questions about COVID-19 should call Delaware 2-1-1, individuals who are deaf or hard of hearing can text their ZIP code to 898-211, or email Hours of operation are:  

Monday – Friday: 8:00 a.m. to 9:00 p.m.  

Saturday: 9:00 a.m. to 5:00 p.m.  

Medically related questions regarding testing, symptoms, and health-related guidance can be submitted by email at 

Delawareans 18 or older are encouraged to download COVID Alert DE, Delaware’s free exposure notification app to help protect your neighbors while ensuring your privacy. Download on the App Store or Google Play.  

DPH will continue to update the public as more information becomes available. For the latest on Delaware’s response, go to    


  Anyone who is deaf, hard of hearing, Deaf-Blind or speech disabled can contact DPH by dialing 711 first using specialized devices (i.e., TTY, TeleBraille, voice devices). The 711 service is free and to learn more about how it works, please visit 

The Delaware Department of Health and Social Services is committed to improving the quality of the lives of Delaware’s citizens by promoting health and well-being, fostering self-sufficiency, and protecting vulnerable populations.