COVID-19: Maine Data
Maine's state of civil emergency ended on June 30, 2021. Since July 3, 2021, Maine CDC has been conducting case investigations and contact tracing Monday through Friday. As a result, COVID-19 case data will be updated by 9:30 AM Tuesday through Saturday. Case data will not be updated Sunday and Monday or on holidays. All data are preliminary and may change as Maine CDC investigates cases. For more information about the data, please see the "Read Details About the Data" section below.
Maine CDC has focused its efforts to follow up with cases of COVID-19 on cases who are under the age of 19, over the age of 74, or who meet certain other criteria (including being hospitalized, identified as a minority, identified as having a disability, being a health care worker or first responder, living or working in congregate settings, or associated with a school or child care facility). Depending on available resources and case levels, Maine CDC may follow up with other cases who do not meet those criteria.
View Maine's complete COVID-19 vaccination dashboard.
COVID-19 Daily Lab Results, New Daily Deaths, Hospitalized Patients, and Syndromic Data
COVID-19 Case Trends
Cumulative COVID-19 Cases by County
Cumulative COVID-19 Cases by ZIP Code
Tables of COVID-19 Testing Data, Hospital Use, and Case Demographics
People infected with the virus that causes COVID-19 may shed it in the water that flows from their homes to public wastewater systems. This happens whether they have symptoms or not. Communities can track virus activity by looking for viral RNA in wastewater. Wastewater, or sewage, includes water that may contain human waste (toilets, showers, sinks). It also includes water from some other sources (rainwater, water for industrial use). To better understand the burden of COVID-19 in a community, Maine CDC and US CDC test wastewater for the virus. This helps to tailor public health actions to protect communities across the state.
Find these data on the US CDC COVID Data Tracker. Data will be added to the Data Tracker as they become available.
Effective July 1, 2021, Maine CDC will update COVID-19 test result data on Thursday of each week.
*Not all labs report results to the Maine CDC electronically. Labs reporting manually report only the positive results and are therefore excluded for purposes of calculating the percent positivity rate.
Molecular testing includes PCR, isothermal, and NAAT methods.
COVID-19 cases among individuals who have been fully vaccinated are referred to as vaccine breakthrough cases. Hospitalizations and deaths among these cases are referred to as vaccine breakthrough hospitalizations and deaths. A person is considered fully vaccinated 14 days after completing a primary COVID-19 vaccine series (e.g., 2 doses of the Pfizer or Moderna vaccines, or 1 dose of the J&J vaccine). FDA-approved COVID-19 vaccines are extremely safe and effective and prevent many infections, hospitalizations, and deaths. However, these vaccines are not 100% effective, and vaccine breakthrough cases are expected. Studies elsewhere in the U.S. have found that people who have COVID-19 infection after vaccination are far less likely to have severe disease (including hospitalization and death) than people who were not vaccinated. Additional and booster doses, when recommended, provide additional protection against infection, hospitalization, and death, and are not reflected in the figures shown here. More information about COVID-19 infections after vaccination can be found on the federal CDC website.
Maine CDC updates these data weekly.
Maine CDC sends some of each week's positive SARS-CoV-2 test samples for genome sequencing to monitor for variants. More information on variants can be found on the federal CDC website.
Maine CDC updates these data as new reports are available.
Updated May 23, 2022 at 8:57 AM.
Maine CDC updates these data weekly.
Updated May 23, 2022 at 1:09 PM.
When are Data Updated? Case data are updated Tuesday through Saturday. Other data sources may have different update schedules.
On June 23, 2020, Maine CDC changed how we show the dates of cases, deaths, and hospitalizations. We now show events on the day they occurred, instead of the day the event was reported to us. As we investigate cases, we learn things that help our understanding of when events such as hospitalizations occurred. We do this to give the public a better picture of the spread of COVID-19 in the state.
On November 9,2020, Maine CDC changed how we show the dates of cases. Maine CDC shows cases on the date the investigation was opened and deaths and hospitalizations on the day the event occurred.
Prior to November 25th, 2020, Maine CDC attempted multiple follow-up calls with every identified case of COVID-19 in Maine in order to assess whether their isolation period was completed. Since that date, Maine CDC has not conducted routine follow-up calls with every identified case, so the count of people who have completed isolations is far smaller than the actual number. As of March 31, 2021, Maine CDC is no longer reporting completed isolation as part of its daily data update.
Who is Included in the Data? Data are about individuals who claim residency in Maine regardless of what state they were tested in, or where they are currently living. For example, an individual who claims residency in Maine but lives in Florida will appear in this data even if they were living in Florida at the time of illness. County listings are by residence of patient, not location of the hospital or testing location.
What are Confirmed Cases? This represents the number of persons in whom SARS-CoV-2 RNA was detected using a molecular amplification test (e.g. PCR) from any approved lab.
What are Probable Cases? There are three ways in which someone can meet the probable case definition:
- The individual Is a close contact of a confirmed case (as identified through an epidemiological investigation) AND has
- Severe respiratory illness with either clinical or radiographic evidence of pneumonia OR
- At least one of the following symptoms:
- Shortness of breath
- Difficulty breathing
- New loss of taste or smell OR
- At least two of the following symptoms:
- Fever (measured or reported)
- Repeated shaking with chills
- Muscle pain
- Sore throat
- Nausea or vomiting
- Congestion or runny nose; OR
- The person has had SARS-CoV-2 detected using an antigen test on a respiratory specimen; OR
- The person’s death certificate lists COVID-19 or SARS-CoV-2 as a cause of death or a significant condition contributing to death with no laboratory evidence for SARS-CoV-2.
What is an Indeterminate Test? Indeterminate means that the test did not provide a clear negative or positive result.
What is Included in Deaths? On January 2, 2022, Maine CDC changed its definition of COVID-associated deaths to match new standards set by the Council of State and Territorial Epidemiologists (CSTE) and US CDC. Maine CDC will apply this new definition for all COVID-associated deaths occurring on and after January 2, 2022. Under the new definition, a COVID-associated death is defined as a death in which:
- The person had a positive laboratory result and COVID-19 was determined to be the cause of death or contributed to the death, OR
- The person had COVID-19 listed as a cause of death on the death certificate, OR
- The person died due to natural causes within 30 days of the collection of a positive COVID-19 specimen or symptom onset.
What are Some Limitations? Confirmed data represent only those individuals with positive test results, which likely under-represents the true number of cases in Maine. For individuals not considered to be at high risk, medical providers were advised to diagnose COVID-19 based on symptoms prior to May 18, 2020. Those diagnoses are not reported. All data are preliminary and may change as Maine CDC investigates confirmed cases.