Update prepared by Lea Hamner, Contract Epidemiologist for Barnstable County Department of Health and Environment.

Introduction

If you’ve navigated to this page, you’re likely wondering how to understand the current climate of respiratory disease transmission in our communities here on Cape Cod. Perhaps you’re worried about COVID-19, RSV, the flu, or all three; the trifecta of what are now referred to as “acute respiratory illnesses”.

Previously, we provided COVID-19 Case Data in Barnstable County as verified by healthcare providers and reporting of targeted diagnostic testing to state and local public health agencies. Now, with the changing landscape of at-home COVID testing along with the co-occurrence of flu and RSV—two viruses which present with similar symptoms to COVID-19—we need a broader perspective to look at viral transmission in our region.

Interested in a quick summary of acute respiratory illness guidelines and recommendations? Click the button below!

This page includes information about:

  • Latest epidemiology summary for the Cape & Islands
  • Data details on COVID-19, seasonal influenza, H5N1 bird flu, and RSV
  • Dashboards for disease severity (ED visits and hospitalizations) & vaccination

This website is updated every other Friday.

January 18, 2025 Epidemiology Update:

Respiratory diseases are at HIGH levels and increasing in the Cape & Islands, throughout Massachusetts, and across the nation. Whooping cough (pertussis), walking pneumonia (mycoplasma pneumonia), COVID-19, seasonal influenza, and RSV are all on the rise.

Infectious respiratory diseases are preventable. You can protect yourself from these illnesses by:

  • Staying up to date on vaccinations
  • Practicing good hand washing
  • Practicing cough/sneeze etiquette
  • Taking steps for cleaner air
  • Opting to mask and/or physically distance when you feel sick or are around others who feel sick.

See below for detailed information about COVID, Flu, and RSV. For more information on other respiratory conditions on the rise, please visit: 

Data Details

Acute Respiratory Disease

Emergency Department visits for acute respiratory disease are increasing locally and statewide. Young children (under 5 years old) and the elderly (over 65) are most severely affected.

Table 1. Acute Respiratory Disease Severity Indicators, Number of Visits and Percent of Total Visits that Week

  Most Recent Week Prior Week
County (1/5–1/11) (12/29–1/4)
Emergency Department Visits    
   Barnstable 362 (18%) 378 (17%)
   Dukes 53 (23%) 64 (24%)
   Nantucket 102 (31%) 92 (31%)
Hospitalizations    
   Barnstable 135 (32%) 120 (26%)
   Dukes 3 (18%) 5 (23%)
   Nantucket 3 (43%) 1 (13%)

“Acute respiratory disease” is a broad category that includes viral respiratory illnesses like COVID, influenza, and RSV but also bacterial infections like pneumonia and whooping cough (pertussis) and many other respiratory conditions. Learn what is included in “Acute Respiratory Disease” here.


COVID-19

Transmission: COVID-19 case counts and wastewater are showing HIGH levels of transmission in the state and Cape & Islands region. Since Thanksgiving, case rates have surged. Reported COVID-19 cases are the tip of the iceberg since the removal of testing requirements for work/school and greater access to at-home testing. On Cape & Islands, weekly case rates and percent positivity dropped from the week prior which may indicate lower transmission, but could also be a product of fewer people testing.

Table 2. COVID-19 Transmission Indicators

  Most Recent Week Prior Week
County (1/5–1/11) (12/29–1/4)
Weekly Case Rate per 100,000 Residents    
   Barnstable 26.2 31.0
   Dukes + Nantucket 17.2 57.4
Percent Positivity    
   Barnstable 7.9% 9.2%
   Dukes + Nantucket 5.4% 9.4%

Statewide, wastewater concentrations are at VERY HIGH levels (4.1 million) for the week of 1/5–1/11. Locally, the most recent wastewater data comes from Wareham and Nantucket. Wareham wastewater concentrations were VERY HIGH (3.1 million copies/L) on 1/9. In Nantucket, concentrations registered at VERY HIGH levels (4.3 million) on 1/6.

Severity: Emergency department visits and hospitalizations remain at LOW/BASELINE levels locally and statewide. However certain populations are more affected. People older than 65 are most likely to be seen in the emergency department or hospitalized for COVID-19.

Table 3. COVID-19 Severity Indicators, Number of Visits and Percent of Total Visits that Week

  Most Recent Week Prior Week
County (1/5–1/11) (12/29–1/4)
Emergency Department Visits    
   Barnstable 44 (2%) 48 (2%)
   Dukes 4 (2%) 13 (5%)
   Nantucket 5 (2%) 4 (1%)
Hospitalizations    
   Barnstable 21 (5%) 19 (4%)
   Dukes 1 (6%) 3 (14%)
   Nantucket 0 (0%) 0 (0%)

Nationally, COVID-19 transmission is HIGH, but severity so far is LOW. COVID-19 activity has increased in most areas of the country, with high COVID-19 wastewater levels and elevated emergency department visits and laboratory percent positivity. Emergency department visits and hospitalizations are highest in older adults and emergency department visits are also elevated in young children.

There is still time to benefit from getting your recommended immunizations to reduce your risk of illness this season, especially severe illness and hospitalization. CDC expects the 2024-2025 COVID-19 vaccine to work well for currently circulating variants. There are many effective tools to prevent spreading COVID-19 or becoming seriously ill.

To read more about trends, visit:

Seasonal Influenza

Seasonal influenza is at circulating at VERY HIGH levels in the Cape & Islands and throughout most of the state. We’re seeing an especially big jump in children (especially those under 5 years old) going to the Emergency Department for influenza. The oldest in our community (those over 80 followed by those 60-79 years old) are the ones increasingly being hospitalized.

Nationally, seasonal influenza activity, including outpatient and emergency department visits, hospitalizations, and deaths, remains elevated across the country. Additional information about current influenza activity can be found at: MA DPH Influenza Reporting Dashboard and CDC Weekly U.S. Influenza Surveillance Report.

Table 3. Flu Severity Indicators, Number of Visits and Percent of Total Visits that Week

  Most Recent Week Prior Week
County (1/5–1/11) (12/29–1/4)
Emergency Department Visits    
   Barnstable 56 (3%) 43 (2%)
   Dukes 5 (2%) 10 (4%)
   Nantucket 17 (5%) 4 (1%)
Hospitalizations    
   Barnstable 19 (4%) 16 (3%)
   Dukes 0 (0%) 0 (0%)
   Nantucket 0 (0%) 0 (0%)

 

Avian Influenza (H5N1 Bird Flu)

H5N1 bird flu is different from seasonal influenza. H5N1 is widespread in wild birds worldwide and is causing outbreaks in poultry and dairy cows. There have been a growing number of human cases in U.S. dairy and poultry workers and two human cases with unknown exposures. To-date, there has also been no detected human-to-human transmission. There have been ZERO cases to-date in Massachusetts. To read more about the national picture, visit the CDC Situation Summary website.

While the risk to the general public is low, specific groups like farmworkers and people with backyard flocks have a higher risk and should practice precautions. People with contact to dairy cows and poultry should be vigilant for symptoms of illness in their animals and protect themselves around sick animals (see personal protection guidance here). Employers, employees, and hobbyists should review steps to protect themselves and others around sick poultry or cows potentially infected with Bird Flu. Read detailed guidance here.

For general information about Bird Flu, see our dedicated webpage: Avian Bird Flu on Cape Cod – Barnstable County. Prevention recommendations include:


RSV

RSV activity has increased to VERY HIGH levels locally, statewide, and nationwide. Nationally, RSV activity has peaked in many areas of the country. Emergency department visits and hospitalizations are highest in children and hospitalizations are elevated among older adults in some areas.

Table 4. RSV Severity Indicators, Number of Visits and Percent of Total Visits that Week

  Most Recent Week Prior Week
County (1/5–1/11) (12/29–1/4)
Emergency Department Visits    
   Barnstable 11 (0.5%) 14 (0.6%)
   Dukes 2 (0.8%) 2 (0.8%)
   Nantucket 3 (0.9%) 3 (1.0%)
Hospitalizations    
   Barnstable 4 (0.9%) 6 (1.3%)
   Dukes 0 (0%) 0 (0%)
   Nantucket 0 (0%) 1 (12.5%)

Respiratory Illness & Vaccination Dashboards

These dashboards provides data on:

  • Emergency department (ED) visits and hospital admission related to acute respiratory diseases, including COVID-19, influenza (the flu), and RSV.
  • Vaccination rates

Dashboards are maintained by MA DPH, updated on Thursdays. Please visit the source webpage–MA DPH Viral Respiratory Illness Reporting–for the most accessible format of this dashboard and the underlying data.

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